短语词组短语valve blow -by 气门漏气grease blow -by 窜油脂combustion blow -by 爆发时漏气cylinder blow -by 气缸内径;气缸漏气;汽缸内径Blow -by gas 吹漏气compression blow -by 从活塞上部空间漏气blow -by gasleak equivalent 漏气当量 返回 blow-by