🔧 压缩比Compression Ratio

使用说明与常见问题How-to & FAQ

「压缩比」是什么？What is the Compression Ratio tool?

CR = V_max / V_min。本地处理。可设置「最大容积」、「最小容积」。CR = V_max / V_min. Processed locally. Settings: Max volume, Min volume.

如何使用「压缩比」？How do I use the Compression Ratio tool?

填写气缸的最大容积和最小容积，即可得到压缩比（最大容积 ÷ 最小容积）。结果会随输入实时更新。Enter the maximum and minimum cylinder volumes to get the compression ratio (maximum ÷ minimum). The result updates as you type.

发动机？Engine?

用排量+余隙容积算 V_max/V_min。Use displacement + clearance for V_max/V_min.

能举个计算实例吗？Can you show a worked example?

例如在「压缩比」中填 最大容积 = 500，最小容积 = 50，结果区显示：压缩比：10:1For example, entering Max volume = 500, Min volume = 50 in the Compression Ratio gives: Compression ratio: 10:1

哪些输入会被检查？Which inputs are validated?

「压缩比」会检查这些输入——「最大容积」、「最小容积」：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 Compression Ratio checks its inputs — "Max volume", "Min volume": 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?

「压缩比」的设置：「最大容积」默认 500；「最小容积」默认 50。每次生成结果都按当前设置处理。Settings in the Compression Ratio — "Max volume" default 500; "Min volume" default 50. The result always uses the current settings.

计算结果可以用于作业或工程吗？Can I use the results for homework or engineering?

「压缩比」使用教科书标准公式（公式写在说明和常见问题中），适合学习和估算核对；涉及安全的工程设计请以规范和实测为准。The Compression Ratio uses standard textbook formulas (given in the description and FAQ), which is good for learning and checking estimates; for safety-critical engineering follow codes and measured values.

「压缩比」免费吗？需要注册吗？Is the Compression Ratio free? Do I need an account?

「压缩比」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 Compression Ratio is completely free with no sign-up or install and works on phones and desktops; what you enter is processed only in your browser.