1. 平衡点：equilibrium state 平衡状态 | equinoctial point 平衡点 | equinox 二分点

2. 二分点：equinoctial gale 分点风暴 | equinoctial point 二分点 | equinoctial spring tide 分点大潮

noun

1. (astronomy) either of the two celestial points at which the celestial equator intersects the ecliptic

Synonym: equinox