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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The roll disk wearing testing machine is used to study the wearability of alloy cast iron after laser melting. The test result shows that the wear weightlessness is reduced greatly.

应用对滚圆盘磨损试验机研究了合金铸铁经激光熔融处理后的耐磨性，试验结果指出，激光处理试样的磨损失重大为减少。

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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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