helium gas

英 美
  • 氦气
  • 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
  • helium n.氦
    1. Helium gas was the thermometric fluid.
      氦气是测温液体。
    2. What are the purposes of helium and nitrogen gas?
      氦气与氮气在这套系统中有何作用?