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Some Special Features of Formation of Manyfunctional Powders Steels Structure Antsiferov V. N.;Oglezneva S. A.;Grevnov L. M. 椭球形陶瓷颗粒增强镍基合金复合涂层热膨胀系数预报姚战军;郑坚;倪新华;陈志伟;黄坚