apsis是什么意思

apsis

英 ['æpsɪs] 美 ['æpsɪs]

n. 教堂东端之半圆室；[天] 拱点

英文词源

apsis (n.): "perigree of the moon, perihelion of a planet" (plural apsides), 1650s, from Latin apsis "arch, vault" (see apse).

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