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Material compoSition, compacting method and die structure of P/M bush with step and prismatic surface on cylinder were outlined.
介绍带台阶并在圆柱体上有三棱面的粉末冶金村套的材料配方、压制方法和模具结构。
The covering is a vast prismatic surface composed of different types of perforated metal in varying densities, whose appearance is constantly changing.
覆盖物是不同密度的穿孔金属组成的一个巨大的方形表面，其外观不断变化。
This may be caused by the side wall boundary layer and prismatic wave on the surface of the flow.
研究表明，溢流坝反弧段内流动存在着微弱的三维结构，流的三维性主要由侧壁边界层及表面棱形波造成。
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