When did the starting air compressor pass its last special survey?
启动空气压缩机上次是什么时候通过专门检验的。
2
The refrigerant, starting as a low-temperature, low-pressure vapor, enters a compressor driven by an electric motor.
循环开始时，制冷剂以低温低压的蒸气，进入一个电机驱动的压缩机。
3
According to some troubles of gas compressor in starting up and shutting down of FCC plant several years, experience and elements of their safe operation were summarized.