| ruthenium |
a rare polyvalent metallic element of the platinum group; it is found associated with platinum
출처: wordnet.princeton.edu/perl/webwn
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| ruthenium |
A member of the platinum group, ruthenium is an extremely hard metal used as a premier alloy for palladium and platinum to make them more wear resistant. Objects plated with ruthenium have exceptional resistance to scratching and abrasion. Ruthenium plated surfaces offer a very unique finish and can be modified from a light grey to dark brownish-black grey color.
출처: www.alacarteclasps.com/Glossary.aspx
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