apoapsis
A city, the county seat of Union County, South Dakota, United States. / A town in east-central Alberta, Canada.
plural of DSA
(astronomy) The point of a body's elliptical orbit about the system's centre of mass where the distance between the body and the centre of mass is at its maximum.
Pronunciation spelling of thanking.
衛星は軌道が重心から最も遠くなる点、すなわち遠地点に達してから惑星へ向けて下降を開始した。
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DiQt
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