perigees
The condition of being heteroclonal
(zoology) Any mite in the family Spinturnicidae.
plural of perigee
(skiing) A method of propulsion, where the skier goes forward by planting both poles onto the ground and pushing back onto them, with both feet aligned side-by-side, moving both skies together.
人工衛星は近地点で大気抵抗が増加し、運用寿命が短くなることがあります。
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