| 释义 |
排列páiliè
1.顺次序放{align; make an ordered arrangement}:
按字母次序～{arrange in an alphabetical order}|依姓氏笔画多少～。{(of names on a list) arranged according to the number of strokes in the surnames}
2.由m个不同的元素中取出n(n≤m)个,按一定的顺序排成一列,叫做由m中取n的排列。排列数记作A,公式是A=m(m-1)(m-2)…(m-n＋1)。{permutation; mathematical operation of taking n elements out of a set of m elements (n≤m) and arrange them in an order, known as ‘permutation of n from m'. The number of possible permutations is recorded as Anm, the calculation formula being A=m(m-1)(m-2)…(m-n＋1).} |