超音波法液位元元元元元元测定
ultra-sonic method of liquid meaduremert
板式空气—空气热交换器
plate-type air-air heat exchanger
补给空气分气阀
additional air slide valve
大型空气分离设备
Large scale air separation plant
Large air separation unit
大中型空气分离设备
Medium scale air separation plant
低温空气分离厂
cryogenic air separation plant
机载膜空气分离装置
on-board membrane air separation module