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+<!DOCTYPE html>
+<html lang="en">
+<head>
+    <meta charset="UTF-8">
+    <meta http-equiv="X-UA-Compatible" content="IE=edge">
+    <meta name="viewport" content="width=device-width, initial-scale=1.0">
+    <title>Document</title>
+    <style>
+        .container_all{
+            display: flex;
+            flex-direction: column;
+            flex-wrap: nowrap;
+            align-items: center;
+        }
+        .container{
+            width: 1000px;
+            height: 500px;
+            border: 1px solid black;
+            display: flex;
+            flex-direction: row;
+            flex-wrap: wrap;
+            align-content: space-around;
+            justify-content: space-around;
+            background-color: antiquewhite;
+            /* background-color: coral; */
+        }
+        .content{
+            width: 490px;
+            height: 240px;
+            border: 1px solid black;
+            display: flex;
+            flex-direction: column;
+            flex-wrap: nowrap;
+            justify-content: flex-start;
+        }
+        .c_content_t{
+            width:auto;
+            height: 30px;
+            font-weight: bold;
+            font-size: 30px;
+            text-align: center;
+            line-height: 30px;
+            margin-bottom: 5px;
+        }
+        .c_content_b{
+            display: flex;
+            flex-direction: row;
+            flex-wrap: nowrap;
+            justify-content: flex-start;
+        }
+        .c_content_l{
+            width: 350px;
+            height: 200px;
+            display: flex;
+            flex-direction: column;
+            justify-content: space-around;
+            flex-wrap: wrap;
+        }
+        .c_content_l div{
+            width: 175px;
+            height:20px;
+            display: flex;
+            flex-direction: row;
+            flex-wrap: nowrap;
+            justify-content: space-between;
+        }
+
+        .c_content_l input{
+            width: 80px;
+        }
+    </style>
+</head>
+<body>
+    <div class="container_all">
+        <div>公式：F=Mx(sinB+f1xcosB)xg+PxLx(sinB+f2xcosB)xg</div>
+        <div class="container">
+            <div class="content" style="background-color: burlywood;">
+                <div class="c_content_t">
+                    求解F：
+                </div>
+                <div class="c_content_b">
+                    <div class="c_content_l">
+                        <div><span>参数M：</span><input id="F_M" type="text"></div>
+                        <div><span>参数sinB：</span><input id="F_sinB" type="text" placeholder="30°就填写30"></div>
+                        <div><span>参数cosB：</span><input id="F_cosB" type="text" placeholder="30°就填写30"></div>
+                        <div><span>参数f1：</span><input id="F_f1" type="text" value="0.015"></div>
+                        <div><span>参数f2：</span><input id="F_f2" type="text" value="0.2"></div>
+                        <div><span>参数g：</span><input id="F_g" type="text" value="9.8"></div>
+                        <div><span>参数P：</span><input id="F_P" type="text"></div>
+                        <div><span>参数L：</span><input id="F_L" type="text"></div>
+                        <div><span></span><button onclick="calculateF()">计算</button></div>
+                    </div>
+                    <div class="c_content_r">
+                        结果：<span id="F_F"></span>
+                    </div>
+                </div>
+            </div>
+            <div class="content" style="background-color: coral;">
+                <div class="c_content_t">
+                    求解M：
+                </div>
+                <div class="c_content_b">
+                    <div class="c_content_l">
+                        <div><span>参数F：</span><input id="M_F" type="text"></div>
+                        <div><span>参数sinB：</span><input id="M_sinB" type="text"></div>
+                        <div><span>参数cosB：</span><input id="M_cosB" type="text"></div>
+                        <div><span>参数f1：</span><input id="M_f1" type="text" value="0.015"></div>
+                        <div><span>参数f2：</span><input id="M_f2" type="text" value="0.2"></div>
+                        <div><span>参数g：</span><input id="M_g" type="text" value="9.8"></div>
+                        <div><span>参数P：</span><input id="M_P" type="text"></div>
+                        <div><span>参数L：</span><input id="M_L" type="text"></div>
+                        <div><span></span><button onclick="solveForM()">计算</button></div>
+                    </div>
+                    <div class="c_content_r">
+                        结果：<span id="M_M"></span>
+                    </div>
+                </div>
+            </div>
+            <div class="content">
+                <div class="c_content_t">
+                    求解？？：
+                </div>
+                <div class="c_content_b">
+                </div> 
+            </div>
+            <div class="content">
+                <div class="c_content_t">
+                    求解？？：
+                </div>
+                <div class="c_content_b">
+                </div> 
+            </div>
+        </div>
+        
+        
+    </div>
+    
+</body>
+</html>
+<script>
+    // 固定的参数值  
+    const f1 = 0.015;  
+    const f2 = 0.2;  
+    const g = 9.8;  
+    
+    // 计算F的函数  
+    // function calculateF(M, sinB, cosB, P, L) {  
+    function calculateF() {  
+        var F_M = document.getElementById("F_M").value;
+        var F_sinB = document.getElementById("F_sinB").value;
+        var F_cosB = document.getElementById("F_cosB").value;
+        var F_f1 = document.getElementById("F_f1").value;
+        var F_f2 = document.getElementById("F_f2").value;
+        var F_g = document.getElementById("F_g").value;
+        var F_P = document.getElementById("F_P").value;
+        var F_L = document.getElementById("F_L").value;
+        // console.log(F_sinB)
+        // console.log(toRadians(F_sinB))
+        F_sinB = Math.floor(Math.sin(toRadians(F_sinB))*1000)/1000
+        F_cosB = Math.floor(Math.cos(toRadians(F_cosB))*1000)/1000
+        // console.log(F_sinB+'-----'+F_cosB)
+        // return
+        // return M * (sinB + f1 * cosB) * g + P * L * (sinB + f2 * cosB) * g;  
+        var result =  F_M * (F_sinB + F_f1 * F_cosB) * F_g + F_P * F_L * (F_sinB + F_f2 * F_cosB) * F_g;  
+        console.log(result)
+        document.getElementById('F_F').innerHTML = result
+    }  
+    
+    // 假设其他参数已知，求解M的函数（简化后的方程）  
+    // function solveForM(F, sinB, cosB, P, L) {  
+    function solveForM() {  
+        var M_F = document.getElementById("M_F").value;
+        var M_sinB = document.getElementById("M_sinB").value;
+        var M_cosB = document.getElementById("M_cosB").value;
+        var M_f1 = document.getElementById("M_f1").value;
+        var M_f2 = document.getElementById("M_f2").value;
+        var M_g = document.getElementById("M_g").value;
+        var M_P = document.getElementById("M_P").value;
+        var M_L = document.getElementById("M_L").value;
+        // 简化方程来求解M  
+        // 注意：这里假设sinB + f1 * cosB不为0  
+        // M_sinB = Math.sin(toRadians(M_sinB))
+        // M_cosB = Math.cos(toRadians(M_cosB))
+
+        M_sinB = Math.floor(Math.sin(toRadians(M_sinB))*1000)/1000
+        M_cosB = Math.floor(Math.cos(toRadians(M_cosB))*1000)/1000
+
+        
+        console.log(M_sinB)
+        console.log(M_cosB)
+        const denominator = (M_sinB + M_f1 * M_cosB) * M_g;  
+        if (denominator === 0) {  
+            alert('sinB + f1 * cosB的结果不可以为0')
+            // throw new Error('sinB + f1 * cosB cannot be zero');  
+        }  
+        console.log(M_sinB + M_f2 * M_cosB)
+        console.log(denominator)
+        // return (F - P * L * (sinB + f2 * cosB) * g) / denominator;  
+        var result =  (M_F - M_P * M_L * (M_sinB + M_f2 * M_cosB) * M_g) / denominator;  
+        document.getElementById('M_M').innerHTML = result
+    }  
+
+    // 将角度转换为弧度  
+    function toRadians(degrees) {  
+        return degrees * (Math.PI / 180);  
+    } 
+    
+    // // 示例：使用calculateF函数  
+    // const M_example = 10;  
+    // const sinB_example = 0.5;  
+    // const cosB_example = Math.sqrt(1 - Math.pow(sinB_example, 2));  
+    // const P_example = 5;  
+    // const L_example = 2;  
+    
+    // const F_value = calculateF(M_example, sinB_example, cosB_example, P_example, L_example);  
+    // console.log(`F的值为: ${F_value.toFixed(2)}`); // 精确到小数点后两位  
+    
+    // // 示例：使用solveForM函数  
+    // const F_given = 100;  
+    // const M_value = solveForM(F_given, sinB_example, cosB_example, P_example, L_example);  
+    // console.log(`求解得到的M的值为: ${M_value.toFixed(2)}`); // 精确到小数点后两位
+</script>
