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wypward(金币+1):谢谢参与 2010-07-08 20:47:17
小兰花(金币+7, 翻译EPI+1):非常感谢您再次帮忙! 谢谢! 2010-07-08 21:38:55
The most effective way to enhance the strength and toughness of metallic element is grain refinement. Nowadays refinement of matrix structure by dispersing second-phase particles has been widely used in industry. The second-phase particles can pin grain boundary and have great impact on grain growth. Through constraining the mobility of grain boundary, it can finally make grain stop growing and achieve extreme dimension.
2楼2010-07-08 18:13:14
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