置换

置換
zhìhuàn
  1. to permute
  2. permutation (math.)
  3. to displace
  4. displacement
  5. to replace
  6. replacement

CEDICT

math

Entry Composition

1 置 zhì
  1. to install
  2. to place
  3. to put
  4. to buy
2 换 huàn
  1. to exchange
  2. to change (clothes etc)
  3. to substitute
  4. to switch
  5. to convert (currency)