air plug meaning in Chinese

空气塞
气孔塞
通气塞

It is suitable to be used as the medium to filter the high purity and strong corrosive gas or liquid , the air plug of battery , gasket , seals for medium / low pressure , the waveguide tube pre - heater for boiler , the sealing wash , the cover of big - powered micro - wave antenna , and radar antenna of twt etc
适用于过滤、高纯度、强腐蚀性的气体液体介质、蓄电池上作气塞、衬垫、中低压密封元件、锅炉波管预热器、密封圈和军用微波大功率天线罩，以及行馈网络雷达天线等。