单词:permutations
音标:[pɜ:mju:'teɪʃnz] ;
n. (一组事物可能的一种)序列, 排列, 排列中的任一组数字或文字( permutation的复数形式 )
n. an event in which one thing is substituted for another
n. the act of changing the arrangement of a given number of elements
n. complete change in character or condition
n. the act of changing the arrangement of a given number of elements
n. complete change in character or condition
permutations的用法和样例:
例句
- Multiplication of permutations, unlike multiplication of numbers, is not always commutative.置换的乘法不同于数的乘法,它并不一定满足交换律。
- It turns out that all these problems can be solved at once, provided we learn enough about the cycle structure of permutations.结果是,所有这些问题都可以一次解决,只要我们充分地了解各置换的循环结构。
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