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单词 periapsis
释义
per·i·ap·sis (pĕrē-ăpsĭs)
n. pl. per·i·ap·si·des (-sĭ-dēz)
The point at which an orbiting object is closest to the center of mass of the body it is orbiting.
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更新时间:2025/3/22 6:21:17