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gum metal zuo he jin yan jiu jin zhan
YANG Yi~ LI Geping~ WU Songquan~ LI Yulan~1 YANG Ke~1 1.Institute of Metal Research;Chinese Academy of Sciences;Shenyang 110016 2.Northwest Institute for Non-ferrous Metal Research;Xi’an 710016 3.Graduate University of Chinese Academy of Sciences;Beijing 100039
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