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。
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。
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.
通过几年来催化装置多次开停气压机中经常发现的一些问题，总结出了安全开好气压机的一些要素和经验。
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