n. 【天文学】出差。 evection in latitude 黄纬出差。 evection of the moon 月球出差。
Evection (Latin for carrying away), in astronomy, is the largest inequality produced by the action of the Sun in the monthly revolution of the Moon around the Earth. The evection, formerly called the moon's second anomaly, was approximately known in ancient times, and its discovery is attributed to Ptolemy.
例句与用法
1.
Tomorrow i need to have evection for one week 明天开始我要出差一个星期
2.
Eletrical installations of buildings - part 5 : selection and evection of electrical equipment - section 548 : earthing arrangements and equipotential bonding for information technology installations 建筑物电气装置第5部分:电气设备的选择和安装第548节:信息技术装置的接地配置和等电位联结
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