📦 梯形棱柱体积计算器Trapezoidal Prism Volume Calculator
梯形棱柱体积 V = 梯形底面积 × 棱柱长，梯形面积 = (a+b)/2 × h。各边与高须大于 0。本地处理。Trapezoidal prism volume V = trapezoid area × length, with area = (a+b)/2 × h. Bases, height and length must be greater than 0. Processed locally.
使用说明与常见问题How-to & FAQ
「梯形棱柱体积计算器」是什么？What is the Trapezoidal Prism Volume Calculator tool?
梯形棱柱体积 V = 梯形底面积 × 棱柱长，梯形面积 = (a+b)/2 × h。各边与高须大于 0。本地处理。Trapezoidal prism volume V = trapezoid area × length, with area = (a+b)/2 × h. Bases, height and length must be greater than 0. Processed locally.
如何使用「梯形棱柱体积计算器」？How do I use the Trapezoidal Prism Volume Calculator tool?
在「梯形棱柱体积计算器」中，填写「上底」、「下底」、「梯形高」、「棱柱长」等参数，结果会随输入实时计算并显示在下方。In the Trapezoidal Prism Volume Calculator: Fill in "Top base", "Bottom base", "Trapezoid height", "Length"; results are recalculated instantly as you type.
斜棱柱也适用吗？Does it work for an oblique prism?
本页按直棱柱计算：体积 = 梯形面积 (a + b) ÷ 2 × h × 长度。斜棱柱公式相同，但长度要取两个底面之间的垂直距离。It assumes a right prism: volume = trapezoid area (a + b) ÷ 2 × h × length. An oblique prism uses the same formula with the perpendicular distance between the ends as the length.
能举个计算实例吗？Can you show a worked example?
例如在「梯形棱柱体积计算器」中填 上底 = 4，下底 = 8，梯形高 = 3，棱柱长 = 10，结果区显示：底面积：18；体积：180For example, entering Top base = 4, Bottom base = 8, Trapezoid height = 3, Length = 10 in the Trapezoidal Prism Volume Calculator gives: Base area: 18; Volume: 180
哪些输入会被检查？Which inputs are validated?
「梯形棱柱体积计算器」会检查这些输入——「上底」、「下底」、「梯形高」、「棱柱长」：必须填写，须大于 0；绝对值超过 10¹⁵ 的数也会被拒绝。不符合时结果区显示具体提示，不会给出数字。The Trapezoidal Prism Volume Calculator checks its inputs — "Top base", "Bottom base", "Trapezoid height", "Length": required, must be greater than 0; numbers above 10¹⁵ in absolute value are rejected too. When a value fails, the result area names the problem instead of showing a number.
有哪些选项可以调整？What options can I adjust?
「梯形棱柱体积计算器」的设置：「上底」默认 4；「下底」默认 8；「梯形高」默认 3；「棱柱长」默认 10。每次生成结果都按当前设置处理。Settings in the Trapezoidal Prism Volume Calculator — "Top base" default 4; "Bottom base" default 8; "Trapezoid height" default 3; "Length" default 10. The result always uses the current settings.
计算精度如何？How precise are the results?
「梯形棱柱体积计算器」使用 JavaScript 双精度浮点数（约 15–16 位有效数字）；极大或极小的数值可能存在精度误差。The Trapezoidal Prism Volume Calculator uses double-precision floating point (about 15–16 significant digits); very large or very small values may lose precision.
「梯形棱柱体积计算器」免费吗？需要注册吗？Is the Trapezoidal Prism Volume Calculator free? Do I need an account?
「梯形棱柱体积计算器」完全免费，无需注册或安装，打开网页即可使用，手机和电脑都能用；输入的内容只在你的浏览器本地处理。The Trapezoidal Prism Volume Calculator is completely free with no sign-up or install and works on phones and desktops; what you enter is processed only in your browser.