discharge coefficient of compressor压缩: compress; condense; reduce; ...排气: exhaust; aerofluxus; air-out ...系数: coefficient; ratio; modulus; ...排气系数: exhaust coefficient排气系统: discharge system; exhaust air system; exhaust gas system; exhaust piping system; exhaust system; exhaust sytem; gas-withdrawal system; scavenger system下载手机词典可随时随地查词查翻译