| 单词 | 正切 |
| 例句 | DEFINITIVE EXAMPLES 权威例句〔arc tangent〕The inverse function of the tangent of an angle.反正切：角度正切的反函数美国传统〔cofunction〕Cotan θ is cofunction of tan θ.余切θ是正切θ的余函数美国传统〔cotangent〕The reciprocal of the tangent of an angle in a right triangle.余切：直角三角形中角的正切的倒数美国传统〔cotangent〕The tangent of the complement of a directed angle or arc.余切：有方向角或弧的补角的正切美国传统〔envelope〕Mathematics A curve or surface that is tangent to every one of a family of curves or surfaces.【数学】 包络线，包络面：一条曲线或一个曲面，与一组曲线或曲面中的每一曲线或曲面保持正切美国传统〔secant〕The straight line drawn from the center through one end of a circular arc and intersecting the tangent to the other end of the arc.正割线：从圆心引出的经过圆弧一个端点并与另一端点正切交割的直线美国传统〔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美国传统〔tangent line〕A line sharing a common point with a curve or surface and being the closest linear approximation of the curve or surface at that point.正切线：与一条曲线或一个平面共切于一点的一条线，而在切点处其与该曲线或平面的线性相似最为接近美国传统〔tangent plane〕The plane containing all the lines tangent to a specified point on a surface.切面：包含与一个表面上的某一点相正切的所有直线的平面美国传统〔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）的方向移动的美国传统〔tangent〕Making contact at a single point or along a line; touching but not intersecting.正切的：仅在一个点或沿一条直线接触的；接触但并不相交的美国传统〔trigonometry〕Trigonometry concerns the functions of angles, such as sine, cosine, and tangent.三角学研究的是角的函数，例如正弦、余弦和正切。剑桥高阶They changed their course to something like a tangent to the earth. 他们将航线改变为差不多与地球呈正切的方向。译典通Trigonometry concerns the functions of angles, such as sine, cosine and tangent.三角学是关于角的功能的学科，例如正弦、余弦和正切。剑桥国际 |
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