排气凸轮 meaning in English

astern exhaust cam
exhaust-valve lifting cam

Bmw intake exhaust camshaft gauge
宝马进排气凸轮固定座
Astern exhaust cam
倒?排气凸轮
Ahead exhaust cam
正?排气凸轮
This paper studies how to check on the quality of motor cam on the base of describing the principle of forming exhaust and admission cam and effect in the moter . it expresses testing purpose , testing theory and method of data treating about cam . on the same time , the author designs and compiles the programme of data treating
在论述发动机进排气凸轮形成原理以及其在发动机中的地位及作用的基础上，本文就汽车发动机进排气凸轮的检验问题进行了研究。