logarithm

英 [ˈlɒɡərɪðəm]

美 [ˈlɔːɡərɪðəm]

n. 对数

复数：logarithms　

经济

BNC.27896 / COCA.31934

牛津词典

noun

对数
any of a series of numbers set out in lists which make it possible to work out problems by adding and subtracting instead of multiplying and dividing

柯林斯词典

对数
In mathematics, thelogarithmof a number is a number that it can be represented by in order to make a difficult multiplication or division sum simpler.

英英释义

noun

the exponent required to produce a given number
Synonym:log

双语例句

The security of the scheme is set up on the intricate nature of the elliptic curve discrete logarithm problem and the knapsack problem.
方案的安全性建立在椭圆曲线离散对数问题和变形的背包问题的难解性上。
Analysis of a digital signature scheme based on discrete logarithm and factoring
一个基于离散对数和因子分解的数字签名方案的分析
In this paper, one method of jamming effectiveness evaluation for speech communication based on the power added logarithm spectrum distance of two speech signal is presented.
介绍了利用两个语音信号序列的加权对数谱距离对语音信号的干扰效果进行评估的方法。
Returns the logarithm ( base-specified) of a value.
返回某个值（以指定底为底）的对数。
Returns the natural logarithm of a number.
返回一个数的自然对数。
If we use exponentiation to encrypt or decrypt, the adversary can use logarithm to attack.
如果我们运用求幂运算来加密和解密，对手就可以运用对数进行攻击。
A threshold group signature scheme based on RSA and discrete logarithm
基于RSA与离散对数的门限群签名方案
A method is proposed for improving the consistency of inconsistent judgment matrix based on exponential scale, by the value of compatibility index of logarithm.
利用对数意义下的相容性指标提出了一种基于指数标度下判断矩阵的一致性调整方法，并通过算例表明该法是切实可行的。
The log() function returns the natural logarithm ( base E) of a number.
函数的作用是：返回一个数值的自然对数。
The natural logarithm of this ratio is called the logarithmic decrement.
此比率自然对数称为对数的减量。