Therefore, double screw compressor and worm compressor compared, in the same speed of the units inside less number of exhaust air ripple, big air flow noise.
因此，双螺杆压缩机与蜗杆压缩机相比，在相同转速下单位内排气次数少，气流脉动大，气流噪声大。
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This paper deals with the pressure ripple of the double vane pump using modern spectrum analysis—maximum entropy spectral estimation and indicates the causes of pressure ripple.