Ject对"排空" 的正确翻译：emptying；evacuate；evacuation；drain(electrode)。发音：[pái kōng]。例句参考：泄气阀，小龙头用来排空或降低压力的一种小阀门或小龙头，如锅炉上的 - A small valve or faucet used to drain or reduce pressure, as from a boiler.；相关词条：vacuation；