单词 | 即顶点 |
释义 | DEFINITIVE EXAMPLES 权威例句〔cone〕The surface generated by a straight line, the generator, passing through a fixed point, the vertex, and moving along a fixed curve, the directrix.锥面:由一条直线,即母线,通过一固定点,即顶点,沿一给定曲线,即准线,连续移动而产生的平面美国传统〔dextral〕Zoology Of or relating to a gastropod shell that coils clockwise and has its aperture to the right when facing the observer with the apex upward.【动物学】 右旋的:软体动物的螺形外壳上的螺线顺时针螺旋即顶点向上,面对观察者时,螺线向右旋转美国传统 |
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