Channel surface

（重定向自Canal surface）

canalsurface: directrix is a helix, with its generating spheres

pipe surface: directrix is a helix, with generating spheres

A channel or canal surface is a surface formed as the envelope of a family of spheres whose centers lie on a space curve, its directrix. If the radii of the generating spheres are constant the canal surface is called pipe surface. Simple examples are:

单词	Canal surface
释义	Canal surface 英语百科 Channel surface （重定向自Canal surface） A channel or canal surface is a surface formed as the envelope of a family of spheres whose centers lie on a space curve, its directrix. If the radii of the generating spheres are constant the canal surface is called pipe surface. Simple examples are:
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