| 单词 | pedal surface |
| 释义 | > as lemmaspedal surface pedal surface n. Geometry a surface that is the pedal of a given surface. ΚΠ 1862Pedal surface [see pedal origin n.]. 1954 Proc. Royal Soc. A. 226 352 The wave surface..is the first negative pedal surface of the velocity surface. 1985 Jrnl. Geom. 24 131 The pedal surface of M relative to O..is the locus of the foot of the perpendicular from O to the tangent plane to M. < as lemmas |
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