垂足曲线

catacaustic

回光(线)

结果还是对数螺线.如对数螺线的渐屈线和渐伸线都是对数螺线;自极点至切线的垂足的轨迹也是对数螺线;以极点为发光点经对数螺线反射后得到的无数根反射线,和所有这些反射线相切的曲线叫回光线(catacaustic),它还是对数螺线.他在惊叹欣赏这曲线神奇巧妙之余,

pure inseparable extension

纯不可分扩张

垂足曲线|pedal curve | 纯不可分扩张|pure inseparable extension | 纯不可分态射|purely inseparable morphism

line of tangential curvature

切曲率的线

腰曲线;垂足限线 line of striction | 切曲率的线 line of tangential curvature | 趋势线 line of trend

pedal curve

垂足曲线

pedal cross shaft level 踏板横轴杆 | pedal curve 垂足曲线 | pedal cycle 自行车

per

垂足

交点(APP)*捕捉到延长线(EXT) *捕捉到圆心(CEN) *捕捉到象限点(QUA)*捕捉到切点(TAN) *捕捉到垂足(PER) *捕捉到平行线(PAR)*捕捉到插入点(INS) *捕捉到节点(NOD) *捕捉到最近点(NEA)样条曲线是通过一系列给定点的光滑曲线,

line of swiftest descent

最速下降线

line of striction | 腰曲线,垂足限线 | line of swiftest descent | 最速下降线 | line of torsion | 扭曲线,螺旋线

line of swiftest descent

最速下降线

line of striction || 腰曲线,垂足限线 | line of swiftest descent || 最速下降线 | line of torsion || 扭曲线,螺旋线

photoperiodic response：光周期响应

photoperiodic induction 光周期诱导 | photoperiodic response 光周期响应 | photoperiodism 光期性

Multi-Variate Statistical Analysis：多元统计剖析

311. 多项距阵 Multi-Nominal Matrix | 312. 多元统计剖析 Multi-Variate Statistical Analysis | 313. 发电厂 Power Plant