The exhaust valve on my car has burnt out.
我汽车气阀烧掉
。
The exhaust valve on my car has burnt out.
我汽车气阀烧掉
。
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、化学成和硬度测试等方法对断头
气门进行
。
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