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拱点
gǒng​diǎn

apsis

Definitions Defs Origin Strokes Stroke Words Sentences Sents
  • 近拱点 jìn​gǒng​diǎn periapsis
    (astronomy) periapsis
  • 远拱点 yuǎn​gǒng​diǎn apoapsis
    (astronomy) apoapsis