对增压发动机而言，增压器排气出口的压力与正常进气时进气口压力的比值。要和增压度区分开，增压度指增压后的发动机的功率与未增压时发动机的功率的比值。
压气机的加功量或增压比由其基元叶栅的落后角确定。
The compression work or the total pressure ratio of a compressor is determined through the use of cascade element performance data concerning deviation Angle.
用该系统对某级增压比2.2的单级高负荷后掠风扇进行了后掠和前掠大小叶片改型设计。
Using this design system, a high-loaded backward-swept fan with a stage pressure ratio of 2.2 was redesigned firstly as a backward-swept and secondly as a forward-swept splittered fan.
本课题以某型压气机的跨音速叶栅为研究平台，以提高叶栅静压增压比，减少叶栅流动损失为目标。
This thesis investigated transonic cascade of a certain compressor in order to increase the static pressure ratio of the cascade and reduce the coefficient of the cascade losses.
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