| 单词 | double point |
| 释义 | > as lemmasdouble point double point n. (in the Higher Geometry) a point common to two branches of a curve, or at which the curve has two tangents (real or imaginary); a node, cusp, or conjugate point; (also) an analogous point on a curved surface. ΚΠ 1728 E. Chambers Cycl. at Double Double point, in the higher Geometry. When all the right Lines tending the same Way, with the infinite Leg of any Curve, do cut it in only one Point. 1872 B. Williamson Elem. Treat. Differential Calculus (1873) xiv. §206 No cubic can have more than one double point. < as lemmas |
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