ram-air entilation 强制通风

Assist-Control entilation 辅助控制通气

pressure support entilation 压力支持通气

entilation duct 通风管

crankcase entilation 曲轴箱通风

back-up entilation 备用通气

pressure preset entilation 压力预置型通气

pressure control entilation 压力控制通气

control mechanical entilation 机械控制通气