复: repeated; double; duplicate排: arrange; put in order的: 4次方是 The fourth power of 2 i ...不重复排列: permutation without repetition复排汽叶片: multi-exhaust blade; multiblade无重复排列: permutation without repetition重复排列: multiple permutations; permutation with repetition; repeated permutation成排的: bank 1单排的: single row; singlerow; uniserial等排的: isosteric多排的: multi-bank密排的: close-packed双排的: two-bank直排的: colinear; collinear纵排的: tandem复排汽车叶片: multi exhaust blade安排的对象: referral成排的干草: windrow成排的鸡舍: battery成排的书: row of books成排的新房: row upon row of new houses电子等排的: isosteric; isoteric顾客排的队: a line of customers queuing密排的管排: closed-pitched banks of tubes前后直排的: tandem