| 释义 |
sine/sain/n. Math. 【数】 1 the trigonometric function that is equal to the ratio of the side opposite a given angle (in a right-angled triangle) to the hypotenuse 正弦 2 a function of the line drawn from one end of an arc perpendicularly to the radius through the other 正弦函数 [Latin sinus ‘curve, fold of a toga’, used in medieval Latin as translation of Arabic jayb ‘bosom, sine’] |