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6, compress and compression ratio 　 1, compressing heat insulation is a kind of compression that aeriform quantity of heat does not arise to be passed into apparently or comes out in reducing a process process. Inside a completely adiabatic air cylinder afore-mentioned processes can become reality. Isotherm is compressed is in reducing a process gas maintains the compression with constant temperature one kind process. 2, compression ratio: (R) 　 compression ratio is to point to those who take angry absolutely pressure to compressor exhaust is mixed than. Exemple: Into gas when sea level absolutely pressure is 0.1 M

One, the compression that compresses purpose gas has a primary purpose, namely with prep above the pressure of original pressure sends aspirated form. Original pressure standard is likely on any account differs, from low-down absolutely pressure (thousand kilograms) until thousands of kilograms; Pressure goes to thousands of kilograms from a few grams; And transmission tolerance from a few stere / cent till hundred thousands of stere / cent. [Fusion_widgethotrandom_image__folder=