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您好,Purasbar 欢迎您的到来~
亲爱的用户:欢迎来到铌吧,Purasbar欢迎您的到来~
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鈮(ní)(英語:niobium),是一種化學元素,其化學符號为Nb,原子序數为41,原子量為7001929063700000000♠92.90637 u。鈮曾有舊稱鈳(英語:columb...
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