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

• 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。
• 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
• The merits and deficiencies of the logarithm model in air combat capability assessment of fighter aircrafts are analyzed.
  详细分析了对数法模型评估飞机空战能力时的优点和不足之处。
• The hyperelliptic curve cryptosystem is based on the hyperelliptic curve discrete logarithm problem, and has the higher safety and the shorter operands compared to other cryptosystems.
  超椭圆曲线密码体制是以超椭圆曲线离散对数问题的难解性为基础的，具有安全性高、操作数短等优点，相对于其他密码体制有明显的优势。
• 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。
• 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。
• 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 number of which a given number is the logarithm.
  一个已知数是某数对数的数。
• In cryptography, we also need to discuss modular logarithm.
  在密码学中，我们也需要讨论模对数。
• 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。