logarithm
英 [ˈlɒɡərɪðəm]
美 [ˈlɔːɡərɪðəm]
n. 对数
复数：logarithms
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
双语例句
- Can occur if you try to calculate the square root or logarithm of a negative number.
如果你试着计算否定数目的正直根或对数，能发生。 - 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。 - The potential of reductive peak is linear with the logarithm values of scan rate.
还原峰的峰电位与扫描速率的对数值呈线性关系。 - The elliptic curve discrete logarithm of non singular elliptic curve over finite field has no efficient attack up to now, which made it cannot be widely applied in cryptography.
目前，在有限域上非奇异椭圆曲线离散对数问题还没有有效的攻击方法，使其在加密技术中得到了广泛应用。 - 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 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。 - Linear regression models are established for both logarithm of heavy metal content and normalized ratio emissivity and are used to verify the significance of the regression equations.
建立了土壤重金属含量的对数值与发射率标准化比值的线性回归模型，并对回归方程的显著性进行了检验。 - Methods Far sight was examined through E Standard Logarithm Eyesight Table.
方法远视力检测使用E字标准对数视力表进行常规检查。 - Both of their security are based on the intractability of elliptic curve discrete logarithm problem.
两种方案的安全性都是基于椭圆曲线离散对数问题的难解性。 - Returns the logarithm ( base-specified) of a value.
返回某个值（以指定底为底）的对数。