“ephemeris time”的概念、定义、翻译、参考文献-科学参考

单词	ephemeris time
释义	ephemeris time Encyclopedia 理学﹝时间计量系统﹞释 ephemeris time历书时以地球公转运动为基础，理论上均匀的时间尺度，简称ET。 Astronomy ephemeris time缩写：ET。历书时
随便看	invariably invariance invariance axiom invariance group invariance of differential forms invariance of domain invariance of normal processes invariance of spatial displacement invariance principle invariance property invariance theorem invariance theorem of domain invariance theory invariance thesis invariant invariant amplitude invariant approach invariant attracting set invariant average invariant basis property invariant bilinear function invariant boundary invariant central manifold invariant circle invariant class of groups

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