实验证明：等通道转角挤压技术是细化晶粒的新方法。

It is shown that equal channel angular extrusion is a new method of grain refinement.

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等通道转角挤压技术(简称ecap)是制备超细晶粒金属块材的最新研究领域之一。

Equal channel angular pressing technology is the latest technical method of producing ultra-fine grain metal materials.

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本研究采用等通道转角挤压技术对聚(d, L -)乳酸进行自增强研究，并测试其增强后的降解性能。

So here we will take the way of the Equal Channel Angular Extrusion (ECAE) to process poly (d, L-lactide) to improve its properties.

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