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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相关单词:

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