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The plane that contains all the lines tangent to a specific point on a surface.
包含所有在表面上的一个特殊的点相切的线的平面。
youdao
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Point, line, surface are all the factors belong to the plane constitution.
点、线、面都是属于平面构成的因素。
youdao
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Point, line, surface are all the factors belong to the plane constitution.
点、线、面都是属于平面构成的因素。
youdao