concentrated ethylene gas

英 美
  • 提浓乙烯
  • concentrated adj.全神贯注的;浓缩的;密集的动词concentrate的过去式和过去分词.
  • ethylene n.乙烯
  • gas n.煤气;气体;汽油;空话vt.使吸入毒气;毒(死);给...加汽油vi.空谈;加汽油