| 释义 |
ephemeris timen.（名词）- A highly accurate astronomical system for the measurement of time based on the period of Earth's orbit, but in practice relying on lunar observations and an accurate lunar ephemeris.历书时：一套计量时间的极端精确的天文学系统，它通常基于地球的公转轨道， 但在实践中依据对月球观测和一个精确的月球星历表
|