“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	conical-scanning radar conical spiral conical spiral feed conical surface conical surface of rotation conical wedge conic constant conic double point conic equidistant projection conic function conic in affine geometry conicity conico-cylindric surface conic of centers conic of elliptic type conic of hyperbolic type conic of parabolic type conicograph conicoid conic operator conic optimization conic point conic polar conic programming conic projection

科学参考收录了854744条科技类词条，基本涵盖了常见科技类参考文献及英语词汇的翻译，是科学学习和研究的有利工具。