diff --git a/L014-1-impurities.html b/L014-1-impurities.html
index 1ba09d7..93a5aab 100644
--- a/L014-1-impurities.html
+++ b/L014-1-impurities.html
@@ -8,34 +8,50 @@
     <title>L014-1 相关物质</title>
     <link rel="stylesheet" href="./github.css">
     <link rel="stylesheet" href="./theme.css">
-    <script src="./decimal.js"></script>
-    <script id="MathJax-script" async src="https://cdn.jsdelivr.net/npm/mathjax@3/es5/tex-mml-chtml.js"></script>
     <script src="https://cdn.bootcdn.net/ajax/libs/jquery/3.6.0/jquery.min.js"></script>
-    <script>
+    <script type="module">
+        import { Decimal } from "./modules/decimal.mjs"
+
         let decimal = Decimal.set({
             rounding: Decimal.ROUND_HALF_EVEN,
             precision: 12
         })
+
+        // 舍入模式：四舍六入五成双
+        const ROUNDING = Decimal.ROUND_HALF_EVEN
+        // 计算精度
+        const PRECISION = 3
+
+        // debug 开关
+        const DEBUG = false
+
+        // 2.2-Dimer 最大值
+        const DIMER_MAX = 2.5
+        // 2-乙酰噻吩 最大值
+        const AT_MAX = 1.0
+        // 总杂 最大值
+        const TOTAL_IMPURITIES_MAX = 4
+        // 纯度 最小值
+        const PURTY_MIN = 96
+
+        // 2.2-Dimer 的 RRF
+        const DIMER_RRF = 1.34
+        // 2-乙酰噻吩 的 RRF
+        const AT_RRF = 2.06
+
+        const msg = `
+            <b>相关参数：</b><br>
+            &nbsp;&nbsp; 2.2-Dimer 的 RRF: ${DIMER_RRF}<br>
+            &nbsp;&nbsp; 2-乙酰噻吩的 RRF: ${AT_RRF}<br>
+            <br>
+            <b>质量标准：</b><br>
+            &nbsp;&nbsp; 2.2-Dimer &le; ${DIMER_MAX}% <br>
+            &nbsp;&nbsp; 2-乙酰噻吩 &le; ${AT_MAX.toFixed(1)}% <br>
+            &nbsp;&nbsp; 杂质总量 &le; ${TOTAL_IMPURITIES_MAX}% <br>
+            &nbsp;&nbsp; 纯度 &ge; ${PURTY_MIN}% <br>
+        `
+
         $(document).ready(() => {
-            const DEBUG = false
-
-            // 2.2-Dimer 最大值
-            const DIMER_MAX = 2.5
-            // 2-乙酰噻吩 最大值
-            const AT_MAX = 1.0
-            // 总杂 最大值
-            const TOTAL_IMPURITIES_MAX = 4
-            // 纯度 最小值
-            const PURTY_MIN = 96
-
-            // 2.2-Dimer 的 RRF
-            const DIMER_RRF = 1.34
-            // 2-乙酰噻吩 的 RRF
-            const AT_RRF = 2.06
-
-            // 计算精度
-            let PRECISION = new Decimal(3).toNumber()
-
             if (DEBUG) {
                 $("#one-dimer").val(247427)
                 $("#one-at").val(65863)
@@ -48,11 +64,7 @@
                 $("#two-all").val(11943432)
             }
 
-            $("#precision").on('input', event => {
-                let p = $("#precision").val()
-                $("#precision-text").text(p)
-                PRECISION = new Decimal(p).toNumber()
-            })
+            $("#msgbox").html(msg)
 
             $("#new_page").click(() => window.open(window.location.href, '_BLANK'))
 
@@ -65,116 +77,140 @@
                 $("#two-at").val("")
                 $("#two-014-1").val("")
                 $("#two-all").val("")
-                $("#msgbox").empty()
+                $("#msgbox").html(msg)
+                $("#table").hide()
             })
 
             $("#ok").click(() => {
                 let one_dimer = $("#one-dimer").val()
-                let one_at = $("#one-at").val()
-                let one_014_1 = $("#one-014-1").val()
-                let one_all = $("#one-all").val()
                 let two_dimer = $("#two-dimer").val()
-                let two_at = $("#two-at").val()
+                let one_014_1 = $("#one-014-1").val()
                 let two_014_1 = $("#two-014-1").val()
+                let one_at = $("#one-at").val()
+                let two_at = $("#two-at").val()
+                let one_all = $("#one-all").val()
                 let two_all = $("#two-all").val()
 
-                let one_dimer_ = func_dimer(one_dimer, one_all)
-                let one_at_ = func_at(one_at, one_all)
-                let one_impurities = func_impurities(one_dimer, one_at, one_014_1, one_all)
-                let one_purity = func_purity(one_impurities)
+                let one_dimer_ = func_dimer(one_dimer, one_all).toFixed(PRECISION, ROUNDING)
+                let one_at_ = func_at(one_at, one_all).toFixed(PRECISION, ROUNDING)
+                let one_impurities = func_impurities(one_dimer, one_at, one_014_1, one_all).toFixed(PRECISION, ROUNDING)
+                let one_purity = func_purity(one_impurities).toFixed(PRECISION, ROUNDING)
 
-                let two_dimer_ = func_dimer(two_dimer, two_all)
-                let two_at_ = func_at(two_at, two_all)
-                let two_impurities = func_impurities(two_dimer, two_at, two_014_1, two_all)
-                let two_purity = func_purity(two_impurities)
+                let two_dimer_ = func_dimer(two_dimer, two_all).toFixed(PRECISION, ROUNDING)
+                let two_at_ = func_at(two_at, two_all).toFixed(PRECISION, ROUNDING)
+                let two_impurities = func_impurities(two_dimer, two_at, two_014_1, two_all).toFixed(PRECISION, ROUNDING)
+                let two_purity = func_purity(two_impurities).toFixed(PRECISION, ROUNDING)
 
-                let msg = `
-                第一组结果：<br>
-                2.2-Dimer: ${format(one_dimer_, DIMER_MAX)} <br>
-                2-乙酰噻吩: ${format(one_at_, AT_MAX)} <br>
-                总杂: ${format(one_impurities, TOTAL_IMPURITIES_MAX)} <br>
-                纯度: ${format(one_purity, PURTY_MIN, true)} <br>
+                let average_dimer = averageFixed(average(one_dimer_, two_dimer_))
+                let average_at = averageFixed(average(one_at_, two_at_))
+                let average_impurities = averageFixed(average(one_impurities, two_impurities))
+                let average_purity = averageFixed(average(one_purity, two_purity))
 
-                <br>
-                第二组结果：<br>
-                2.2-Dimer: ${format(two_dimer_, DIMER_MAX)} <br>
-                2-乙酰噻吩: ${format(two_at_, AT_MAX)} <br>
-                总杂: ${format(two_impurities, TOTAL_IMPURITIES_MAX)} <br>
-                纯度: ${format(two_purity, PURTY_MIN, true)} <br>
+                let data = {
+                    "one": {
+                        "dimer": format(one_dimer_, DIMER_MAX),
+                        "at": format(one_at_, AT_MAX),
+                        "impurities": format(one_impurities, TOTAL_IMPURITIES_MAX),
+                        "purity": format(one_purity, 100, PURTY_MIN,)
+                    },
+                    "two": {
+                        "dimer": format(two_dimer_, DIMER_MAX),
+                        "at": format(two_at_, AT_MAX),
+                        "impurities": format(two_impurities, TOTAL_IMPURITIES_MAX),
+                        "purity": format(two_purity, 100, PURTY_MIN)
+                    },
+                    "average": {
+                        "dimer": format(average_dimer, DIMER_MAX),
+                        "at": format(average_at, AT_MAX),
+                        "impurities": format(average_impurities, TOTAL_IMPURITIES_MAX),
+                        "purity": format(average_purity, 100, PURTY_MIN)
+                    }
+                }
 
-                <br>
-                平均值：<br>
-                2.2-Dimer: ${format(func_average(one_dimer_, two_dimer_), DIMER_MAX)} <br>
-                2-乙酰噻吩: ${format(func_average(one_at_, two_at_), AT_MAX)} <br>
-                总杂: ${format(func_average(one_impurities, two_impurities), TOTAL_IMPURITIES_MAX)} <br>
-                纯度: ${format(func_average(one_purity, two_purity), PURTY_MIN, true)} <br>
-
-                <br>
-                操规允许：<br>
-                2.2-Dimer &le; ${DIMER_MAX}% <br>
-                2-乙酰噻吩 &le; ${AT_MAX.toFixed(1)}% <br>
-                总杂 &le; ${TOTAL_IMPURITIES_MAX}% <br>
-                纯度 &ge; ${PURTY_MIN}% <br>
-                `
-
-                $("#msgbox").html(msg)
+                generateTable(data)
             })
 
-            let func_dimer = (dimer, all) => {
-                if (dimer == '' || all == '') return 0
-                // dimer% = [dimer / (all * RRF)] * 100
-                let x = decimal.mul(all, DIMER_RRF)
-                let y = decimal.div(dimer, x)
-                return decimal.mul(y, 100).toFixed(PRECISION, Decimal.ROUND_HALF_EVEN)
-            }
-
-            let func_at = (at, all) => {
-                if (at == '' || all == '') return 0
-                // at% = [at / (all * RRF)] * 100
-                let x = decimal.mul(all, AT_RRF)
-                let y = decimal.div(at, x)
-                return decimal.mul(y, 100).toFixed(PRECISION, Decimal.ROUND_HALF_EVEN)
-            }
-
-            // TODO: 解决总杂计算不准的问题
-            let func_impurities = (dimer, at, l014_1, all) => {
-                if (dimer == '' || at == '' || l014_1 == '' || all == '') return 0
-                // x = all - dimer - at - l014_1
-                // y = (x / all) * 100
-                // impurities% = y + dimer% + at%
-                let x = decimal.sub(all, dimer).sub(at).sub(l014_1)
-                let y = decimal.div(x, all).mul(100).toFixed(PRECISION)
-                let z = decimal.add(y, func_dimer(dimer, all)).add(func_at(at, all))
-                return z.toFixed(PRECISION, Decimal.ROUND_HALF_EVEN)
-            }
-
-            // purty% = 100 - impurities%
-            let func_purity = (total_impurities) => {
-                if (total_impurities == '') return 0
-                return decimal.sub(100, total_impurities).toFixed(PRECISION, Decimal.ROUND_HALF_EVEN)
-            }
-
-            let func_average = (a, b) => decimal.add(a, b).div(2).toFixed(PRECISION, Decimal.ROUND_HALF_EVEN)
-
-            let format = (value, max, more = false) => {
-                let red = `<span style='color: red;'>${value}%</span>`
-                if (value == 0) return 'ND'
-                if (value < 0) return red
-                if (!more && value >= max) return red
-                if (more && value <= max) return red
-                return `${value}%`
-            }
         })
+
+        function func_dimer(dimer, all) {
+            if (dimer == '' || all == '') return 0
+            // dimer% = [dimer / (all * RRF)] * 100
+            let x = decimal.mul(all, DIMER_RRF)
+            let y = decimal.div(dimer, x)
+            return decimal.mul(y, 100)
+        }
+
+        function func_at(at, all) {
+            if (at == '' || all == '') return 0
+            // at% = [at / (all * RRF)] * 100
+            let x = decimal.mul(all, AT_RRF)
+            let y = decimal.div(at, x)
+            return decimal.mul(y, 100)
+        }
+
+        function func_impurities(dimer, at, l014_1, all) {
+            if (dimer == '' || at == '' || l014_1 == '' || all == '') return 0
+            // x = all - dimer - at - l014_1
+            // y = (x / all) * 100
+            // impurities% = y + dimer% + at%
+            let x = decimal.sub(all, dimer).sub(at).sub(l014_1)
+            let y = decimal.div(x, all).mul(100)
+            let z = decimal.add(y, func_dimer(dimer, all)).add(func_at(at, all))
+            return z
+        }
+
+        function func_purity(total_impurities) {
+            if (total_impurities == '') return 0
+            // purty% = 100 - impurities%
+            return decimal.sub(100, total_impurities)
+        }
+
+        function average(a, b) {
+            return decimal.add(a, b).div(2)
+        }
+
+        function format(value, max, min = 0) {
+            if (value == 0) {
+                return 'ND' // means 'Not Detected'
+            }
+
+            if (value > max || value < min) {
+                return `<span style='color: red;'>${value}</span>`
+            }
+
+            return value
+        }
+
+        // 对平均值进行舍入
+        function averageFixed(value) {
+            // 大于等于 1 时只保留一位小数，否则保留两位
+            return value.toFixed(value >= 1 ? 1 : 2, ROUNDING)
+        }
+
+        function generateTable(data) {
+            $("#table").show()
+
+            $("#Dimer>#one").html(data.one.dimer)
+            $("#2-AT>#one").html(data.one.at)
+            $("#impurities>#one").html(data.one.impurities)
+            $("#purity>#one").html(data.one.purity)
+
+            $("#Dimer>#two").html(data.two.dimer)
+            $("#2-AT>#two").html(data.two.at)
+            $("#impurities>#two").html(data.two.impurities)
+            $("#purity>#two").html(data.two.purity)
+
+            $("#Dimer>#average").html(data.average.dimer)
+            $("#2-AT>#average").html(data.average.at)
+            $("#impurities>#average").html(data.average.impurities)
+            $("#purity>#average").html(data.average.purity)
+        }
+
     </script>
 </head>
 
 <body>
     <h3>L014-1 相关物质</h3>
-    <strong>* 此功能未经详细测试，计算结果仅供参考。</strong>
-
-    <br><br>
-    <label for="precision">计算精度：</label><span id="precision-text">3</span>
-    <input type="range" id="precision" value="3" min="0" max="12">
     <div class="one">
         第一组<br>
         <input type="number" name="one-dimer" id="one-dimer" inputmode="numeric" placeholder="2.2-Dimer 峰面积">
@@ -200,6 +236,45 @@
     </div>
 
     <br>
+    <table id="table" style="font-size: small; width: 100%; text-align: center; display: none;">
+        <caption>计算结果</caption>
+        <tr>
+            <th scope="col">/</th>
+            <th scope="col">第一组(%)</th>
+            <th scope="col">第二组(%)</th>
+            <th scope="col">平均值(%)</th>
+        </tr>
+        <tr id="Dimer">
+            <th scope="row">2.2-Dimer</th>
+            <td id="one"></td>
+            <td id="two"></td>
+            <td id="average"></td>
+        </tr>
+        <tr id="2-AT">
+            <th scope="row">2-乙酰噻吩</th>
+            <td id="one"></td>
+            <td id="two"></td>
+            <td id="average"></td>
+        </tr>
+        <tr id="max_impurities">
+            <th scope="row">最大单杂</th>
+            <td id="one">/</td>
+            <td id="two">/</td>
+            <td id="average">/</td>
+        </tr>
+        <tr id="impurities">
+            <th scope="row">杂质总量</th>
+            <td id="one"></td>
+            <td id="two"></td>
+            <td id="average"></td>
+        </tr>
+        <tr id="purity">
+            <th scope="row">纯度</th>
+            <td id="one"></td>
+            <td id="two"></td>
+            <td id="average"></td>
+        </tr>
+    </table>
     <div id="msgbox"></div>
 </body>
 
diff --git a/lod.html b/lod.html
index 81d2a58..69a28ad 100644
--- a/lod.html
+++ b/lod.html
@@ -8,27 +8,24 @@
     <title>干燥失重</title>
     <link rel="stylesheet" href="./github.css">
     <link rel="stylesheet" href="./theme.css">
-    <script src="./decimal.js"></script>
     <script src="https://cdn.bootcdn.net/ajax/libs/jquery/3.6.0/jquery.min.js"></script>
     <script type="module">
+        import { Decimal } from './modules/decimal.mjs'
         import { IO } from './modules/tools.js'
         let io = new IO('lod')
         let debug = false
         let tip = `
-<br>
-操作过程：
-<br>
-空瓶 -> 干燥3小时 -> 冷却称重 -> 干燥1小时 -> 冷却称重(1) -> 加样(2) -> 干燥3小时 -> 冷却称重 -> 干燥1小时 -> 冷却称重(3)
-<br>
-<br>
-记录保存功能使用方法：
-<br>
-保存：输入样品批号，点击保存，此时第一组及第二组输入框内的数据将被存储。
-<br>
-恢复：输入或选择样品批号，点击恢复，此时将读取对应数据并自动填入输入框。
-<br>
-删除：输入或选择样品批号，点击删除，此时将从已存储的数据中删除对应数据。
-`
+            <br><b>操作过程：</b>
+            <br>&nbsp;&nbsp; 1. 空瓶干燥 3 小时
+            <br>&nbsp;&nbsp; 2. 冷却称重
+            <br>&nbsp;&nbsp; 3. 干燥 1 小时
+            <br>&nbsp;&nbsp; 4. 冷却称重(1) 并加样(2)
+            <br>&nbsp;&nbsp; 5. 干燥 3 小时
+            <br>&nbsp;&nbsp; 6. 冷却称重
+            <br>&nbsp;&nbsp; 7. 干燥 1 小时
+            <br>&nbsp;&nbsp; 8. 冷却称重(3)
+            <br>
+        `
 
         let decimal = Decimal.set({
             rounding: Decimal.ROUND_HALF_EVEN,
@@ -46,27 +43,23 @@
             }
 
             $("#ok").click(() => {
-                var m0l = $("#m0l").val()
-                var m1l = $("#m1l").val()
-                var m3l = $("#m3l").val()
-                var m0r = $("#m0r").val()
-                var m1r = $("#m1r").val()
-                var m3r = $("#m3r").val()
+                let m0l = $("#m0l").val()
+                let m1l = $("#m1l").val()
+                let m3l = $("#m3l").val()
+                let m0r = $("#m0r").val()
+                let m1r = $("#m1r").val()
+                let m3r = $("#m3r").val()
 
-
-                var lod1 = lod(m0l, m1l, m3l)
-                var lod2 = lod(m0r, m1r, m3r)
-                var average = decimal.add(lod1, lod2).div(2).toString()
-
-                // TODO 可能干燥失重不应该使用 RSD 值来判断是否平行，可尝试使用 RD 或 RAD 判断
-                // let rsd = RSD(lod1, lod2)
+                let lod1 = lod(m0l, m1l, m3l)
+                let lod2 = lod(m0r, m1r, m3r)
+                let average = decimal.add(lod1, lod2).div(2).toString()
 
                 let format = (value) => {
                     if (value <= 0) return `<span style="color: red;">${value}</span>`
                     return value
                 }
 
-                var msg = `
+                let msg = `<br>
 第一组干燥失重 = ${format(lod1)}<br>
 第二组干燥失重 = ${format(lod2)}<br>
 两组干燥失重平均值 = ${format(average)}<br>
@@ -80,18 +73,12 @@ ${m0r != '' && m1r != '' ? `第二组恒重后空瓶+样 = ${decimal.add(m0r, m1
             $("#clear").click(() => {
                 if (!window.confirm("所填写的数据将被清空，确定？")) return
                 $("#lod-name").val("")
-                $("#m0l").val("")
-                $("#m1l").val("")
-                $("#m3l").val("")
-                $("#m0r").val("")
-                $("#m1r").val("")
-                $("#m3r").val("")
-                message(tip)
+                clearInput()
             })
 
             $("#new_page").click(() => {
                 // 将当前页面的数据封装，并通过 URL 参数传递给新页面
-                let data = JSON.stringify(exportData())
+                let data = JSON.stringify(io.collectData($("input")))
                 let search = `?data=${data}`.replaceAll('"', '%22')
                 let url = `${window.location.origin}${window.location.pathname}${search}`
                 window.open(url, "_blank")
@@ -104,8 +91,7 @@ ${m0r != '' && m1r != '' ? `第二组恒重后空瓶+样 = ${decimal.add(m0r, m1
                     return
                 }
 
-                let lod = exportData()
-                io.write(id, JSON.stringify(lod))
+                io.write(id, JSON.stringify(io.collectData($("input"))))
                 loadSavedContentsList()
             })
 
@@ -117,12 +103,7 @@ ${m0r != '' && m1r != '' ? `第二组恒重后空瓶+样 = ${decimal.add(m0r, m1
                 }
 
                 let lod = JSON.parse(io.read(id))
-                $("#m0l").val(lod.m0l)
-                $("#m1l").val(lod.m1l)
-                $("#m3l").val(lod.m3l)
-                $("#m0r").val(lod.m0r)
-                $("#m1r").val(lod.m1r)
-                $("#m3r").val(lod.m3r)
+                io.exportData(lod, $("input"))
             })
 
             $("#remove").click(() => {
@@ -134,7 +115,8 @@ ${m0r != '' && m1r != '' ? `第二组恒重后空瓶+样 = ${decimal.add(m0r, m1
                 if (confirm(`确认删除 ${id} 的数据？`)) {
                     io.remove(id)
                     loadSavedContentsList()
-                    $("#clear").click()
+                    $("#lod-name").val("")
+                    clearInput()
                 }
             })
 
@@ -148,44 +130,31 @@ ${m0r != '' && m1r != '' ? `第二组恒重后空瓶+样 = ${decimal.add(m0r, m1
             }
         })
 
-        // 需要传递给新页面的数据
-        function exportData() {
-            let data = {
-                "time": Date.now(),
-                "id": $("#lod-name").val(),
-                "m0l": $("#m0l").val(),
-                "m1l": $("#m1l").val(),
-                "m3l": $("#m3l").val(),
-                "m0r": $("#m0r").val(),
-                "m1r": $("#m1r").val(),
-                "m3r": $("#m3r").val(),
-            }
-            return data
+        function clearInput() {
+            $("#m0l").val("")
+            $("#m1l").val("")
+            $("#m3l").val("")
+            $("#m0r").val("")
+            $("#m1r").val("")
+            $("#m3r").val("")
+            message(tip)
         }
 
         // 需要导入哪些
         function importData(data) {
+            io.exportData(data, $("input"))
+            clearInput()
             // 对批号自增
-            let id = data.id
-            if (data.id.indexOf('-')) {
-                let x = data.id.split('-')
+            let id = data.lod_name
+            if (data.lod_name.indexOf('-')) {
+                let x = data.lod_name.split('-')
                 id = x[x.length - 1]
             }
-            console.log(id)
             id = decimal.add(id, 1)
-            if (data.id.indexOf('-')) {
-                id = data.id.substring(0, data.id.lastIndexOf('-') + 1) + id
+            if (data.lod_name.indexOf('-')) {
+                id = data.lod_name.substring(0, data.lod_name.lastIndexOf('-') + 1) + id
             }
-            console.log(id)
-
             $("#lod-name").val(id)
-            // 暂时不需要自动填充上一个页面传来的数据
-            // $("#m0l").val(data.m0l)
-            // $("#m1l").val(data.m1l)
-            // $("#m3l").val(data.m3l)
-            // $("#m0r").val(data.m0r)
-            // $("#m1r").val(data.m1r)
-            // $("#m3r").val(data.m3r)
         }
 
         function getUrlParams(key) {
@@ -196,49 +165,12 @@ ${m0r != '' && m1r != '' ? `第二组恒重后空瓶+样 = ${decimal.add(m0r, m1
             }
         }
 
-        // 计算相对标准偏差
-        // Markdown 公式：$RSD = \frac{SD}{\overline{x}}*100\%$
-        function RSD(...array) {
-            let stdev = STDEV(...array)
-            let average = () => {
-                let sum = new Decimal(0)
-                array.forEach(value => sum = sum.plus(new Decimal(value)))
-                return sum.dividedBy(array.length)
-            }
-
-            let rsd = stdev.dividedBy(average()).times(100)
-            return rsd.toPrecision(5)
-        }
-
-        // 计算标准偏差
-        // Markdown 公式：$SD = \sqrt{\frac{\sum_{i=1}^{n}(x_i - \overline{x})^2}{n-1}}$
-        function STDEV(...array) {
-            // 计算所有数值的和
-            var sum = new Decimal(0)
-            array.forEach(value => sum = sum.plus(new Decimal(value)))
-
-            // 计算所有数值的平均值
-            let average = sum.dividedBy(array.length)
-
-            // 计算 ((每个数值减去平均值)的二次方)的和，即公式中分子的结果
-            var sumEach = new Decimal(0)
-            array.forEach(value => {
-                let v = new Decimal(value)
-                let temp = v.minus(average).toPower(2)
-                sumEach = sumEach.plus(temp)
-            })
-
-            // 以上结果除以 n-1 并开根号即得
-            let x = sumEach.dividedBy(array.length - 1).squareRoot()
-            return x
-        }
-
         function loadSavedContentsList() {
             // load data from localStorage to input.
             $("#keys").empty()
             let keys = io.listKeys().sort()
             keys.forEach(key => {
-                let timestamp = JSON.parse(io.read(key)).time
+                let timestamp = JSON.parse(io.read(key)).timestamp
                 let time = new Date(timestamp).format("yyyy-MM-dd hh:mm")
                 let option = document.createElement("option")
                 $(option).attr("value", key)
@@ -307,13 +239,13 @@ ${m0r != '' && m1r != '' ? `第二组恒重后空瓶+样 = ${decimal.add(m0r, m1
         // 为 Date 创建日期格式化方法
         Date.prototype.format = function (fmt) {
             let o = {
-                "M+": this.getMonth() + 1,                 //月份
-                "d+": this.getDate(),                    //日
-                "h+": this.getHours(),                   //小时
-                "m+": this.getMinutes(),                 //分
-                "s+": this.getSeconds(),                 //秒
-                "q+": Math.floor((this.getMonth() + 3) / 3), //季度
-                "S": this.getMilliseconds()             //毫秒
+                "M+": this.getMonth() + 1,                  // 月份
+                "d+": this.getDate(),                       // 日
+                "h+": this.getHours(),                      // 小时
+                "m+": this.getMinutes(),                    // 分
+                "s+": this.getSeconds(),                    // 秒
+                "q+": Math.floor((this.getMonth() + 3) / 3),// 季度
+                "S": this.getMilliseconds()                 // 毫秒
             }
             if (/(y+)/.test(fmt)) {
                 fmt = fmt.replace(RegExp.$1, (this.getFullYear() + "").substr(4 - RegExp.$1.length))
diff --git a/modules/tools.js b/modules/tools.js
index 5838927..68aab95 100644
--- a/modules/tools.js
+++ b/modules/tools.js
@@ -1,34 +1,225 @@
+import Decimal from './decimal.mjs'
+
 class IO {
+    /**
+     * 传入一个组名，返回一个 IO 对象，后续仅对该组内的数据进行读写
+     * @param {string} scope 组名
+     */
     constructor(scope) {
         this.scope = scope
     }
 
+    /**
+     * 读取一条数据
+     * @param {string} id 数据的唯一标识符
+     * @returns 该标识符所代表的数据
+     */
     read(id) {
         let key = `${this.scope}/${id}`
         return localStorage.getItem(key)
     }
 
+    /**
+     * 写入一条数据
+     * @param {string} id 数据的唯一标识符
+     * @param {*} data 该标识符所代表的数据
+     */
     write(id, data) {
         let key = `${this.scope}/${id}`
         localStorage.setItem(key, data)
     }
 
+    /**
+     * 删除一条数据
+     * @param {string} id 数据的唯一标识符
+     */
     remove(id) {
         let key = `${this.scope}/${id}`
         localStorage.removeItem(key)
     }
 
+    /**
+     * 列出已存储的所有数据的唯一标识符
+     * @returns 当前组内所存储的所有数据的唯一标识符
+     */
     listKeys() {
         let keys = []
         for (const key in localStorage) {
             if (Object.hasOwnProperty.call(localStorage, key) &&
                 key.startsWith(this.scope)) {
-                    let i = key.indexOf('/') + 1
+                let i = key.indexOf('/') + 1
                 keys.push(key.slice(i))
             }
         }
         return keys
     }
+
+    /**
+     * 确定是否需要收集 value
+     * @param {*} value 当前值
+     * @param {boolean} collectEmptyValue 是否收集空值
+     * @returns
+     */
+    #checkValue = (value, collectEmptyValue) => {
+        return collectEmptyValue || !(value === null || value === undefined || value == '')
+    }
+
+    /**
+     * 检查 input 类型，若不是用户输入的内容（如 button 等），则不收集该 input 的数据
+     * @param {*} type input 类型
+     * @returns 是否需要收集该 input 的数据
+     */
+    #checkType = (type) => {
+        let allows = [
+            // 已列出所有的 input 类型，将不收集数据的类型注释掉即可
+            // 'button',
+            'checkbox',
+            'color',
+            'date',
+            'datetime-local',
+            'email',
+            // 'file',
+            // 'hidden',
+            // 'image',
+            'month',
+            'number',
+            // 'password',
+            'radio',
+            'range',
+            // 'reset',
+            'search',
+            // 'submit',
+            'tel',
+            'text',
+            'time',
+            'url',
+            'week'
+        ]
+
+        return allows.indexOf(type) != -1
+    }
+
+    /**
+     * 从 input 控件收集用户填入的数据
+     * @param {HTMLCollection | HTMLInputElement} inputs 需要收集数据的 input 标签
+     * @param {boolean} collectEmptyValue 是否需要收集空值
+     * @returns 收集的数据
+     */
+    collectData(inputs, collectEmptyValue = true) {
+        if (inputs.length == 0) return
+
+        let result = {
+            timestamp: Date.now()
+        }
+
+        let safeKey = (key) => {
+            return key.replaceAll('-', '_')
+        }
+
+        for (let input of inputs) {
+            if (this.#checkType(input.type)) {
+                // 需要分类型进行收集数据
+                switch (input.type) {
+                    case 'checkbox':
+                        result[safeKey(input.name)] = input.checked
+                        break
+                    case 'radio':
+                        if (input.checked) {
+                            result[safeKey(input.name)] = input.value
+                        }
+                        break
+                    default:
+                        if (this.#checkValue(input.value, collectEmptyValue)) {
+                            result[safeKey(input.name)] = input.value
+                        }
+                        break
+                }
+            }
+        }
+        return result
+    }
+
+    /**
+     * 将 data 中的值自动填入到对应的 input 中
+     * @param {Object} data 需要填入的数据
+     * @param {HTMLCollection | HTMLInputElement} inputs 需要填入数据到哪些 input
+     */
+    exportData(data, inputs) {
+        let reSafeKey = (key) => {
+            return key.replaceAll('-', '_')
+        }
+
+        for (let item in data) {
+            for (let input of inputs) {
+                if (reSafeKey(input.name) == item) {
+                    switch (input.type) {
+                        case 'checkbox':
+                            input.checked = data[item]
+                            break
+                        case 'radio':
+                            if (input.value == data[item]) input.checked = true
+                            break
+                        default:
+                            input.value = data[item]
+                            break
+                    }
+                }
+            }
+        }
+    }
+
 }
 
-export { IO }
+class Formula {
+    static AVERAGE(...array) {
+        let sum = new Decimal(0)
+        array.forEach((item) => sum = sum.plus(item))
+        return sum.dividedBy(array.length)
+    }
+
+    // 计算相对标准偏差
+    // Markdown 公式：$RSD = \frac{SD}{\overline{x}}*100\%$
+    // @see Formula.STDEV()
+    static RSD(...array) {
+        let stdev = this.STDEV(...array)
+        let average = () => {
+            let sum = new Decimal(0)
+            array.forEach(value => sum = sum.plus(new Decimal(value)))
+            return sum.dividedBy(array.length)
+        }
+
+        let rsd = stdev.dividedBy(average()).times(100)
+        return rsd.toPrecision(5)
+    }
+
+    // 计算标准偏差
+    // Markdown 公式：$SD = \sqrt{\frac{\sum_{i=1}^{n}(x_i - \overline{x})^2}{n-1}}$
+    static STDEV(...array) {
+        // 计算所有数值的和
+        let sum = new Decimal(0)
+        array.forEach(value => sum = sum.plus(new Decimal(value)))
+
+        // 计算所有数值的平均值
+        let average = sum.dividedBy(array.length)
+
+        // 计算 ((每个数值减去平均值)的二次方)的和，即公式中分子的结果
+        let sumEach = new Decimal(0)
+        array.forEach(value => {
+            let v = new Decimal(value)
+            let temp = v.minus(average).toPower(2)
+            sumEach = sumEach.plus(temp)
+        })
+
+        // 以上结果除以 n-1 并开根号即得
+        let x = sumEach.dividedBy(array.length - 1).squareRoot()
+        return x
+    }
+}
+
+class Deviation {
+    static AbsoluteDeviation(num, nums) {
+        // TODO: implement this method
+    }
+}
+
+export { IO, Formula, Deviation }