pre-aeration

英[p'riːeər'eɪʃn] 美[p'riːeər'eɪʃn]
  • n.预曝气
  • course n.课程;讲座;过程;路线;一道(菜)v.跑过,穿过;追赶;快跑
  • pre abbr.PetroleumRefiningEngineer炼油工程师