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A hard, brittle, grayish-white rare earth metal with an atomic symbol Ru, atomic number 44, and atomic weight 101.07. It is used as a catalyst and hardener for PLATINUM and PALLADIUM.
中文名称索引；定义为 MeSH 英文原文，尚未逐条译审。MESH:D012428 · MeSH 2026。
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