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单词 θ115708
释义
the world > relative properties > number > geometry > line > [noun] > perpendicular (3)
plumb line1551

A vertical line; (occasionally more generally) a straight line at right angles to another.

normal1728

A perpendicular line; a straight line that is at right angles to another line, a tangent to a curve, or a tangent plane to curved surface.

binormal1848

(See quot. 1848.)

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更新时间:2024/12/24 21:05:27