heliacal
发音
英 [hɪ'laɪəkəl]
美 [hɪ'laɪəkəl]
-
- adj.
- 太阳的，和太阳同时或几乎同时出没的
单词词源
heliacal 太阳的
来自希腊语Helios,太阳神，词源同Sol,sun.
双语例句
- 1. The method of contiguity was that adopted by the ancient egyptians and the greeks ; it involved the observation of heliacal risings and settings , i.e.the risings and settings of stars near the ecliptic just before sunrise and just after sunset .
- 古埃及和古希腊人用的就是接近法；该方法观察恒星的偕日出和偕日没，也就是观测黄道附近的恒星在日出前或日没后瞬间的出没。