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

A sort of3-element permutation with repetitions allowed is studied, and a recurrence relation in general condition is found.
研究一类特殊的可重复排列性质，建立了一般情形下求这类排列数的递推公式，导出了一些特殊情形下的具体计算公式。
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。
2 perform the following permutation on the data block.
对数据块进行如下置换。
The fast Fourier transform algorithm for the production of the permutation factor circulant matrices;
给出了一类置换因子循环线性系统求解的一种快速算法。
With each recursive step, cross products with one additional Permutation Group are formed.
伴随每个递归步骤，会形成带有一个额外置换群的向量积。
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。
This paper explores the order problem of mark symbols in Classification for Chinese Libraries, and offers different opinions of the permutation order and using order of mark symbols.
本文探讨了《中图法》中标记符号的顺序的问题。就标记符号的排列顺序与使用顺序提出不同的看法。
Other enumeration problems lead us to the study of orbits of permutation groups.
其它的计数问题引导我们去研究置换群的轨道。
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。
By introducing the original permutation and the region, the conception of single permutation is proposed.
在引入原排列和区的概念的基础上，提出了单排列的概念。