... radioactivity standard 放射性标准 ; 放射性标准源 Discovering Radioactivity 揭示放射现象 contained radioactivity 密封放射性 ...
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In addition, there also existed the hybridization of the crustal substance which contained OS with high radioactivity during the formation of the sulfide nickel deposit.
煎茶岭硫化镍矿床成矿过程中有含高放射性成因锇的壳源物质混染。
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