permutation

英 [ˌpɜːmjuˈteɪʃn]

美 [ˌpɜːrmjuˈteɪʃn]

n.  排列(方式); 组合(方式); 置换

复数：permutations　

计算机

BNC.18648 / COCA.20172

牛津词典

noun

• 排列（方式）；组合（方式）；置换
  any of the different ways in which a set of things can be ordered
  1. The possible permutations of x, y and z are xyz, xzy, yxz, yzx, zxy and zyx.
     x、y和z的可能的组合方式为xyz、xzy、yxz、yzx、zxy和zyx。

柯林斯词典

• N-COUNT 排列
  Apermutationis one of the ways in which a number of things can be ordered or arranged.
  1. Variation among humans is limited to the possible permutations of our genes.
     人类的变异受限于我们的基因可能存在哪些排列。

双语例句

• Using gamma function, the paper popularized the common conceptions of the usual factorial, permutation and combination and proved some combination formulas in common use.
  依照伽马函数，对通常的阶乘、排列、组合的概念进行了推广，并证明了一些常用的组合公式。
• 2 perform the following permutation on the data block.
  对数据块进行如下置换。
• The experimental result shows us a conjecture that there exists no such permutation over even dimensional space.
  通过试验给出了关于偶数维空间上几乎完善非线性幂置换的一个猜想；
• Its of great practical value for computing the shift distribution of an order-given permutation.
  研究任意阶置换的漂移分布具有重要的实用价值。
• Such a permutation is called a derangement.
  这样的一个排列称为错位排列。
• This paper deals with orthodox semirings whose additive idempotents satisfy permutation identities.
  本文主要研究加法幂等元满足置换等式的纯整半环。
• The security of the scheme is effectively improved by using chaotic modulation and permutation to the embedded watermark and making a expansion for the key space.
  通过时于嵌入的水印进行混沌调制和置乱，并扩展密钥空间，有效地改进了算法的安全性。
• Random permutation and sharpening are basic methods of image processing.
  空间域随机置乱和锐化滤波是基本的图像处理方法。
• The single permutation generates from Quasi-single permutation with the insertion point, which is up to mass region.
  其中的单排列可由准单排列插点生成，如何插点取决于排列中的单质区。
• The authors proposed a permutation correction method which is easy to perform and can correct the biases very effectively.
  作者提出排列校正方法，可以成功地校正各偏差。