intake & exhaust valves进气: air admission; admission; in ...和: mix; blend排气阀: air evacuation valve; discha ...进气和排气系统: filter paper disc or membrane; intake and exhaust system进气门和排气门: intake valve/exhaust valve下载手机词典可随时随地查词查翻译关注微信公众号：chachacidian，回复:进气和排气阀，即可在微信中查询翻译
