lower apsis近地点;近日点
apsis window教堂半圆形后殿窗户
eastern apsis教堂东端的半圆形殿
apsis s拱点
apsides apsis的复数
apsis arch教堂半圆形后殿拱
Apsis Aran徐州友谊宾馆
higher apsis远地点
Apsis Records公司;出版者
N（名词） either of two points lying at the extremities of an eccentric orbit of a planet, satellite, etc, such as the aphelion and perihelion of a planet or the apogee and perigee of the moon. The line of apsides connects two such points and is the principal axis of the orbit 拱点 (Also called apse)