... 钢材混凝土组合梁 steel-concrete composite girder 钢材牌号 type of steels 钢材品种 rolling shapes ...
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This paper reviews the present status and developing trend of carburizing steels used for automotive gears in domestic and abroad and the new heat treatment process related to the new type of steels.
综述了国内外汽车齿轮用渗碳钢的现状和发展趋势以及与新钢种相配合的新的热处理工艺。
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