📏 土卫九半径 ↔ 天卫二半径Phoebe mean radius to Umbriel mean radius

使用说明与常见问题How-to & FAQ

「土卫九半径 ↔ 天卫二半径」是什么？What is the Phoebe mean radius to Umbriel mean radius tool?

土卫九半径与天卫二半径互算（1 RPho = 0.1821446896 RUmb）。本地换算，附常用相关单位。Convert Phoebe mean radius and Umbriel mean radius (1 RPho = 0.1821446896 RUmb). Runs locally with related units.

如何使用「土卫九半径 ↔ 天卫二半径」？How do I use the Phoebe mean radius to Umbriel mean radius tool?

在「土卫九半径 ↔ 天卫二半径」中输入数值并选择原单位，表格会同时列出换算到所有其他单位的结果，可一键复制。Enter a value in the Phoebe mean radius to Umbriel mean radius and choose the source unit; the table shows the value in every other unit at once, ready to copy.

1 土卫九半径等于多少天卫二半径？How many Umbriel mean radius in 1 Phoebe mean radius?

1 RPho = 0.1821446896 RUmb（按国际定义系数）。1 RPho = 0.1821446896 RUmb (international definition).

如何把土卫九半径换算成天卫二半径？How do I convert Phoebe mean radius to Umbriel mean radius?

结果 = 数值 × 0.1821446896。例如 1 RPho = 0.1821446896 RUmb。result = value × 0.1821446896. Example: 1 RPho = 0.1821446896 RUmb.

土卫九半径/天卫二半径属于哪类单位？What kind of units are Phoebe mean radius/Umbriel mean radius?

二者同属「长度」量纲，可安全互算；也可打开「length-converter」做多单位对照。Both are length units; see also the length converter hub.

换算系数准确吗？Are the conversion factors exact?

「土卫九半径 ↔ 天卫二半径」采用国际单位制（SI）或公认标准中的定义值作为换算系数，结果保留约 10 位有效数字。The Phoebe mean radius to Umbriel mean radius uses factors defined by the SI or other recognised standards and shows about 10 significant digits.

「土卫九半径 ↔ 天卫二半径」免费吗？需要注册吗？Is the Phoebe mean radius to Umbriel mean radius free? Do I need an account?

「土卫九半径 ↔ 天卫二半径」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 Phoebe mean radius to Umbriel mean radius is completely free with no sign-up or install and works on phones and desktops; what you enter is processed only in your browser.