| 单词 | 对数 |
| 释义 | 〔modulus〕The number by which a logarithm in one system must be multiplied to obtain the corresponding logarithm in another system.对数的模：当从一个系统变换到另一个系统时为得到相应的对数须乘以的一个数〔mantissa〕The decimal part of a logarithm. In the logarithm 2.95424, the mantissa is 0.95424.尾数：对数的小数部分。如在对数2.95424中，尾数是0.95424〔Napier〕Scottish mathematician who invented logarithms and introduced the use of the decimal point in writing numbers.纳皮尔，约翰：(1550-1617) 苏格兰数学家，他发明了对数并推广了小数点在记数中的用法〔characteristic〕The characteristic of the logarithm 6.3214 is 6.对数6.3214的首数为6〔covalence〕The number of electron pairs an atom can share with other atoms.共用电子对数，共价：一个原子与其他原子共用的电子的对数〔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 〔semilogarithmic〕Having one logarithmic and one arithmetic scale:半对数的：有一个对数和一个算术标度的：〔Euler〕Swiss mathematician particularly noted for his full development of integral calculus and for his theories of complex numbers, logarithmic and trigonometric functions, and lunar motion.欧拉，莱奥哈尔德：(1707-1783) 瑞士数学家，尤其他对微积分的开创性贡献，以及他的复数、对数、三角函数和月球运动等理论而闻名于世〔base〕The number raised to the logarithm of a designated number in order to produce that designated number.底：被升到指定数字的对数上的数量，是为了得到那被指定的数目〔antilogarithm〕The number for which a given logarithm stands; for example, where logx equals y, the x is the antilogarithm of y. 反对数，逆对数：一个特定对数代表的数字；例如，如X 的对数等于 Y 那么 X 就是 Y 的反对数 〔cologarithm〕The logarithm of the reciprocal of a number.余对数：一个数字的倒数的对数 |
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