资料来源 : pyDict

四次圆纹曲面

资料来源 : Webster's Revised Unabridged Dictionary (1913)

Cyclide \Cy"clide\ (s?"kl?d), n. [Gr. ky`klos circle.] (Geom.)
   A surface of the fourth degree, having certain special
   relations to spherical surfaces. The tore or anchor ring is
   one of the cyclides.