positive crankcase ventilation
常见例句
- All automobile engines now built are equipped with the positive-crankcase ventilation system of crankcase emission control.
所有现代制造的汽车发动机，都需要装备控制曲轴箱有害污染的曲轴箱强制通风系统。 - The positive crankcase ventilation valve and gas caps with air-pollution control valves reduce volatile organic compound loss.
曲柄轴箱通风阀和配有废气帽的空气污染控制阀（的使用）对减少挥发性有机混合物释放有积极作用。 返回 positive crankcase ventilation