短语词组短语Melanin -engine block 黑成分revolving -block engine [机]旋转缸体式发动机cast -welded engine block 柴油机铸焊机体intra -toriing engine block 房内阻滞valve -in-block engine 侧置式发动机;气门装在气缸体上的发动机cam -in-block engine 体凸轮引擎 返回 engine block