| 单词 | 常用对数 |
| 释义 | 〔logarithm〕The power to which a base, usually 10, must be raised to produce a given number. Ifn x = a, the logarithm of a, with n as the base, is x; symbolically, log n a = x. For example, 10 3 = 1,000; therefore, log 10 1,000 = 3. The kinds most often used are the common logarithm and the natural logarithm. 对数：为使某数等于一给定数而必须取的乘幂的幂指数。如果n x=a, ，以 a 为底 n 的对数就是 x ；表示为log na=x 。如，10 3=1,000；于是log 101,000=3。通常使用的有常用对数和自然对数 〔Briggs〕English mathematician who devised the decimal-based system of logarithms and invented the modern method of long division.布里格斯，亨利：(1561-1630) 英国数学家，发明常用对数和现代长除法的方法〔decibel〕A unit used to express relative difference in power or intensity, usually between two acoustic or electric signals, equal to ten times the common logarithm of the ratio of the two levels.分贝：通常表示两个声音信号或电力信号在功率或强度方面的相对差别的单位，相当于两个水平的比率的常用对数的十倍 |
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