空压机和压缩机实际上是两种不同的机械产品；
Air compressor and compressor are actually two different mechanical products;
工艺压缩机能够压缩多种气体介质，比如氢气、氮气、氯气、氧气等，用在空分行业来制氮制氧等。空压机主要是压缩空气，在除了化工的诸多行业都会用到空压机；
The process compressor can compress a variety of gas media, such as hydrogen, nitrogen, chlorine and oxygen. It is used in the air separation industry to produce nitrogen and oxygen. The air compressor is mainly compressed air, which will be used in many industries except chemical industry;
空压机做空压机的企业很多，但是做工艺压缩机的企业并不多。工艺压缩机的企业一般都能够生产不同压缩工艺的机组。
There are many enterprises engaged in air compressor, but not many enterprises engaged in process compressor. Process compressor enterprises are generally able to produce units with different compression processes.