periapsis
英式发音 [perɪ'æpsɪs] 美式发音 [ˌperɪ'æpsɪs]一般意思:
n.[天]近拱点
完整意思:
轨道力学术语,表示轨道上物体与中心物体之间的最近距离;
词性:
名词;
造句:
1、The spacecraft reached itsperiapsisand began its descent towards the planet.
2、Theperiapsisof the moon's orbit around the Earth is about 363,300 kilometers.
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