| 释义 |
ru·the·ni·um AHD[ro͞o-thēʹnē-əm] D.J.[ruːˈθiːniːəm]K.K.[ruˈθiniəm]n.Symbol Ru （名词）符号 Ru - A hard white acid-resistant metallic element that is found in platinum ores and is used to harden platinum and palladium for jewelry and in alloys for nonmagnetic wear-resistant instrument pivots and electrical contacts. Atomic number 44; atomic weight 101.07; melting point 2,310°C; boiling point 3,900°C; specific gravity 12.41; valence 0, 1, 2, 3, 4, 5, 6, 7, 8. See table at element 钌：一种坚硬的白色抗酸金属元素，在铂矿中可找到它，用于加固铂和钯以制成宝石和化合成非磁性的抗磨损的工具枢纽和电接触器。原子序数44；原子量101.07；熔点2,310°C；沸点3,900°C；比重12.41；原子价0,1,2,3,4,5,6,7,8 参见 element
- From Medieval Latin Ruthenia [Russia] 源自 中世纪拉丁语 Ruthenia [俄罗斯]
- from Ruthenī [Russians] 源自 Ruthenī [俄罗斯人]
- from Russian Rusin 源自 俄语 Rusin
- from Old Russian Rusĭ [Russian] * see Russian 源自 古普鲁士语 Rusĭ [俄语] * 参见 Russian
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