Through the process test, wearing test and microstructure observation and analysis, the convention performance of oxygen-acetylene flame spray welded layer is studied.

通过工艺试验、耐磨试验和显微组织观察分析，研究了氧-乙炔火焰喷焊层的常规性能。

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Wearing test in laboratory and test in production show that service life of repaired parts is over two times longer than the new ones, and the work cost decreases by 49%-77%.

室内磨损试验及生产试验均证明了修复零件的使用寿命比新品提高一倍以上，作业成本降低49% - 77%。

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There is also a method that's not widespread called the atopy patch test, which involves wearing a pad containing the possible allergen for about 48 hours.

CNN: Food allergy diagnosis 'an inexact science'

He saved his best for those wearing Baggy Green and notched a final Test five-wicket haul and ton on that tour down under - the last time England won the Ashes.

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