pre-coating

英[p'riːk'əʊtɪŋ] 美[p'riːk'əʊtɪŋ]
  • [化]预涂层
  • emergency n.突发事件;紧急状态adj.应急的;紧急的;备用的
  • pre abbr.PetroleumRefiningEngineer炼油工程师