space polar coordinate
Any of a system of coordinates by which a point is located in space by its distance from a pole, the angle between the polar axis and its radius vector, and its longitude
plural of vertebre
One who scrabbles.
To dehydrate by means of cryodehydration
彗星の軌道をモデル化するために、天文学者はその位置を球面極座標を用いて表現した。
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