| 单词 | 正割 |
| 释义 | DEFINITIVE EXAMPLES 权威例句〔arc secant〕The inverse function of the secant of an angle.反正割：角度正割的反函数美国传统〔leave〕Although Armstrong overcame the circumstances of his birth, he never really left New Orleans behind.阿姆斯特朗虽然摆脱了他出生时的境遇，但他从没有真正割断与新奥尔良的联系。朗文当代〔secant〕The ratio of the length of this line to the length of the radius of the circle.正割值：这条线的长度与圆半径之比美国传统〔secant〕The reciprocal of the cosine of an angle in a right triangle.正割：直角三角形中一个角正弦的倒数美国传统〔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 |
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