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单词 ruthenium
释义

ruthenium/roohʹtheeni·əm/ noun

a rare white metallic chemical element of the platinum group that occurs naturally in platinum ores, and is used in hardening platinum alloys and in catalysts: symbol Ru, atomic number 44

[scientific Latin ruthenium from medieval Latin Ruthenia Russia]
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更新时间:2024/9/22 4:26:43