exhaust valve

1.The exhaust valve on my car has burnt out.

我汽车上的排气阀烧掉了。

2.Analysis of the Stem-fillet blend fracture of exhaust valve was conducted by means of macroexamination, microstructure examination, chemical composition analysis and hardness test.

摘要采用宏、微观检验、化学成析和硬度测试等方法对断头的排气门进行了析。