Metal Doctor (MD) is a pulsed micro-welding process that is being used increasingly for small scale and precision coating and repair of high value components.
金属医生是一种脉冲微弧焊接过程，可以用来在小面积范围内实现精密涂层和用来修复高附加值的部件。
Under a wide range of P and V value, there are very low friction coefficient and wear, high dimensional stability for coating-metal pairs and no any damage during the test of nylon coating.
涂层在较大的P、V值范围内与各类配副均具有极低的摩擦系数和磨损量以及很高的尺寸稳定性；长期工作过程中，涂层未出现任何破坏现象。
Objective To evaluate the value of high-frequency ultrasound in diagnosis of embedded injury of non-metal small objects.
目的探讨高频超声在软组织非金属微小异物嵌入伤诊断中的应用价值。
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