evection

evection读音音标

英 [ɪ\'vekʃən]

美 [ɪ\'vekʃən]

evection意思解释

n.

（由太阳引力造成的）出差，月动差；

英英释义

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.

双语例句

用作名词(n.)My friend went to Beijing on evection.一个学生把我的朋友去北京出差了。By the way , tomorrow I will have evection for a week.顺便说一下，明天我要出差一个星期！