常見例句雙語例句What's the requirement for the forced ventilation system for crankcase?發(fā)動機(jī)曲軸箱強(qiáng)制通風(fēng)的要求？The crankcase ventilation system carries fresh air through the crankcase .曲軸箱通風(fēng)系統(tǒng)要攜帶新鮮的空氣通過曲軸箱。The positive crankcase ventilation valve and gas caps with air-pollution control valves reduce volatile organic compound loss.曲柄軸箱通風(fēng)閥和配有廢氣帽的空氣污染控制閥（的使用）對減少揮發(fā)性有機(jī)混合物釋放有積極作用。 返回 crankcase ventilation