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Reciprocating type compressor, with respect to its essence character, not be to decide constant flow machine. Rotate as crankshaft every time, every compressor air cylinder from the draw-out and many gas in low-pressure pipeline, undertake compression to its, promote its high-pressured pipeline next. This kind of intermittence inside system of reciprocating type compressor passes qualitative generation complex when transformation force wave, call normally pulsatile. Pulsatile frequency and amplitude suffer compressor the thermodynamic property of gentle style fluid and reciprocating type compressor reach traversal speed, temperature, pressure its