| 单词 | 倒数 |
| 释义 | 〔permeance〕A measure of the ability of a magnetic circuit to conduct magnetic flux; the reciprocal of reluctance.磁导：磁路传导磁通量能力的度量；磁阻的倒数〔diopter〕A unit of measurement of the refractive power of lenses equal to the reciprocal of the focal length measured in meters.屈光度：透镜或棱镜折光率的一种量度，等于以米计算焦距之倒数〔inverse〕The reciprocal of a designated quantity. Also called multiplicative inverse 倒数：指定数的倒数 也作 multiplicative inverse〔cologarithm〕The logarithm of the reciprocal of a number.余对数：一个数字的倒数的对数〔vergence〕A measure of the convergence or divergence of a pair of light rays, defined as the reciprocal of the distance between a point of reference and the point at which the rays intersect.光折射度数：一对光线聚合或发散的计量单位，定义为参照点与光线交叉点之间距离的倒数〔curvature〕The reciprocal of the radius of a circle.曲率：一个圆半径的倒数 |
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