There are a centrifugal type oil-gas separator and a crankcase ventilation device at rear of cylinder head cover (see Figure 11).是什么意思_There are a centrifugal type oil-gas separator and a crankcase ventilation device at rear of cylinder head cover (see Figure 11).在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句