💧 水粘度示意Water Viscosity (demo)

使用说明与常见问题How-to & FAQ

「水粘度示意」是什么？What is the Water Viscosity (demo) tool?

按温度查表示意动力粘度（近似）。本地处理。可设置「温度 °C」。Lookup-style dynamic viscosity vs temperature (approx). Processed locally. Settings: Temp °C.

如何使用「水粘度示意」？How do I use the Water Viscosity (demo) tool?

在「水粘度示意」中，填写「温度 °C」等参数，结果会随输入实时计算并显示在下方。In the Water Viscosity (demo): Fill in "Temp °C"; results are recalculated instantly as you type.

结果来自精确的数据表吗？Is it from an exact data table?

不是，本页在 0 °C（约 1.79 mPa·s）和 100 °C（约 0.28 mPa·s）之间做线性插值，只适合演示。水的实际粘度随温度呈非线性变化，中间温度的误差较大（例如 20 °C 实际约 1.00 mPa·s）。需要精确值请查标准数据表。No. It interpolates linearly between 0 °C (about 1.79 mPa·s) and 100 °C (about 0.28 mPa·s), so it is only a demo. Real viscosity is non-linear in temperature, so mid-range errors are large (at 20 °C the real value is about 1.00 mPa·s). Use a reference table for accurate values.

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

例如在「水粘度示意」中填 温度 °C = 20，结果区显示：动力粘度 Pa·s（示意）：0.001488For example, entering Temp °C = 20 in the Water Viscosity (demo) gives: Dynamic viscosity Pa·s (approx): 0.001488

哪些输入会被检查？Which inputs are validated?

「水粘度示意」会检查这些输入——「温度 °C」：必须填写；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 Water Viscosity (demo) checks its inputs — "Temp °C": required; 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?

「水粘度示意」的设置：「温度 °C」默认 20。每次生成结果都按当前设置处理。Settings in the Water Viscosity (demo) — "Temp °C" default 20. 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?

「水粘度示意」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 Water Viscosity (demo) 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.

「水粘度示意」免费吗？需要注册吗？Is the Water Viscosity (demo) free? Do I need an account?

「水粘度示意」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 Water Viscosity (demo) is completely free with no sign-up or install and works on phones and desktops; what you enter is processed only in your browser.