⏱️ 土卫二自转日 ↔ 水星年Enceladus day to Mercury sidereal year
土卫二自转日与水星年互算（1 d Enc = 0.01557614677 a Merc）。本地换算，附常用相关单位。Convert Enceladus day and Mercury sidereal year (1 d Enc = 0.01557614677 a Merc). Runs locally with related units.
点击任意一行可复制该结果；小于 0.0001 或不小于 10¹⁵ 的数值用 × 10ⁿ 科学计数法显示Click any row to copy that result. Values below 0.0001 or at least 10¹⁵ are shown in × 10ⁿ notation
使用说明与常见问题How-to & FAQ
「土卫二自转日 ↔ 水星年」是什么？What is the Enceladus day to Mercury sidereal year tool?
土卫二自转日与水星年互算（1 d Enc = 0.01557614677 a Merc）。本地换算，附常用相关单位。Convert Enceladus day and Mercury sidereal year (1 d Enc = 0.01557614677 a Merc). Runs locally with related units.
如何使用「土卫二自转日 ↔ 水星年」？How do I use the Enceladus day to Mercury sidereal year tool?
在「土卫二自转日 ↔ 水星年」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 Enceladus day to Mercury sidereal year and choose the source unit; the table shows the value in every other unit at once, ready to copy.
1 土卫二自转日等于多少水星年？How many Mercury sidereal year in 1 Enceladus day?
1 d Enc = 0.01557614677 a Merc（按国际定义系数）。1 d Enc = 0.01557614677 a Merc (international definition).
如何把土卫二自转日换算成水星年？How do I convert Enceladus day to Mercury sidereal year?
结果 = 数值 × 0.01557614677。例如 1 d Enc = 0.01557614677 a Merc。result = value × 0.01557614677. Example: 1 d Enc = 0.01557614677 a Merc.
土卫二自转日/水星年属于哪类单位？What kind of units are Enceladus day/Mercury sidereal year?
二者同属「时间」量纲，可安全互算；也可打开「time-converter」做多单位对照。Both are time units; see also the time converter hub.
换算系数准确吗？Are the conversion factors exact?
「土卫二自转日 ↔ 水星年」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 Enceladus day to Mercury sidereal year uses factors defined by the SI or other recognised standards and shows about 10 significant digits.
「土卫二自转日 ↔ 水星年」免费吗？需要注册吗？Is the Enceladus day to Mercury sidereal year free? Do I need an account?
「土卫二自转日 ↔ 水星年」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 Enceladus day to Mercury sidereal year is completely free with no sign-up or install and works on phones and desktops; what you enter is processed only in your browser.