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

2 perform the following permutation on the data block.
对数据块进行如下置换。
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。
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。
Cyclic shift permutation structure is an important part of partial parallel decoder for quasi-cyclic LDPC codes.
循环移位置换单元是准循环LDPC码的部分并行译码器的重要组成部分。
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。
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。
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。
As the application of orthomorphic permutations in cryptography, we simply emphasize the advantage provided by such permutation in increasing the security of a block cipher.
简要强调了利用正形置换强化分组密码的优点；利用正形置换设计了一种密码安全布尔函数。
With the formation of protoplasm by sheer permutation& combination of atoms, the life began here.
随着原生质的形成它只是原子的排列组合生命诞生了。
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。