1. a gas burner used in laboratories; has an air valve to regulate the mixture of gas and air. 
   实验室里用的汽灯；有一个空气阀可以控制可燃气和空气的密度。
2. A faucet or valve by which the flow of a liquid or gas can be regulated. 
   活塞一个能调节液体或气体流动的龙头或阀门，
3. Pack a valve stem. 
   扎好活门塞
4. A valve governing fuel intake. 
   控制汽油消耗的阀门
5. Relating to a mitral valve. 
   关于僧帽瓣的

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• 1. 进气阀
  grease seal 油封...gas inlet valve 进气阀...gauge plug 塞规
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