真空熔炼及热压烧结制备Bi2Te2.7Se0.3热电材料的微结构研究
진공용련급열압소결제비Bi2Te2.7Se0.3열전재료적미결구연구
Microstructure of Bi2Te2.7Se0.3 Thermo-electric Material Prepared by Vacuum Melting and Hot-pressing Sintering
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