This paper studied the causes of bursting of stop valve by the methods of visual inspection, metallographical examination, chemical analysis and mechanical property test.
采用宏微观检验、化学成分分析及力学性能测试方法对截止阀阀体爆裂原因进行了分析。
At the same time, this paper also discusses some general methods of bonds inspection, such as electrical testing, mechanical testing and visual inspection.
同时，论文也介绍了几种常规的产品检测方法，如电特性检测法、机械检测法及视觉检测法。
Visual inspection the case have no visual abnormality, no obvious Nick, burr and other mechanical damage, outer metal have no rust. Use limit sample to check for any failures.
目视检查，无外观异常，表面无明显划痕、毛刺及其它机械损伤，外露金属部分无锈，其它限度根据样品确认。
Visual inspection the case have no visual abnormality, no obvious Nick, burr and other mechanical damage, outer metal have no rust. Use limit sample to check for any failures.
目视检查，无外观异常，表面无明显划痕、毛刺及其它机械损伤，外露金属部分无锈，其它限度根据样品确认。
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