RU

/,ɑr 'ju/ 10
a rare polyvalent metallic element of the platinum group; it is found associated with platinum

noun [专属名词]abbr. (英)橄榄球协会(Rugby Union)

When content of Ru is lower, the structure of coat is Sn-base sosoloid.
钌含量较低时,主要为锡基固溶体。

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