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单词 spheroid
释义

spheroid

A spheroid is a surface of revolution formed by rotating an ellipse about one of its axes. Equivalently an ellipsoid is a spheroid if two of its axes are of equal length. The spheroid is oblate if the axis of rotation is the minor axis and prolate if the axis of rotation is the major axis. The Earth is approximately an oblate spheroid.

Oblate spheroid with vertical axis

Prolate spheroid with vertical axis

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更新时间:2025/4/29 8:13:11