foul gas

• 秽臭气,不凝性气体

foul gas的用法和样例：

例句

1. In order to maintain the vacuum in evaporator,the vacuum-pump was displaced by the condenser for auto-draining non-condensable gas.
   用自排不凝性气体大气冷凝器取代真空泵以维持系统的真空度。