| 释义 |
〔slope〕The tangent of the angle of inclination of a line, or the slope of the tangent line for a curve or surface.斜率：一条直线的倾斜角的正切或一条弧线或一个平面的正切线的斜率〔cofunction〕Cotan θ is cofunction of tan θ.余切θ是正切θ的余函数〔tangential〕Of, relating to, or moving along or in the direction of a tangent.正切的：属于、关于一个切线或切（面）的，沿着或向着一个切线（或切面）的方向移动的 |