Equal channel angular extrusion is a new technology of obtaining ultra fine grain materials.

等通道转角挤压是一种新的制备超细晶粒材料的技术。

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According to the specification recently promulgated, it is required to determine filling criteria of incoherent coarse grain materials on the basis of their relative density.

我国近期颁布的设计规范，对土石坝的无粘性粗粒坝料的要求是以相对密度确定其填筑标准。

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The temperature and the deformation rate are the key factors to prepare ultra-fine grain materials.

变形温度和变形速率是获得超细晶材料的关键。

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They rarely take physical delivery of raw materials and have no effect on the actual production and consumption of metal, grain or oil.

ECONOMIST: Commodity speculators do more good than harm

In the days ahead, our train will pass a succession of monstrous eastbound freight services, groaning with raw materials: Albertan oil and yellow sulphur, British Columbian coal and lumber, but mostly grain from the prairies.

BBC: The wonders of Canada by rail