The exhaust valve on my car has burnt out.
我汽车上的排气阀烧掉了。
The exhaust valve on my car has burnt out.
我汽车上的排气阀烧掉了。
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。
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，
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