chro·mi·um
noun/ˈkrəʊmiəm/
/ˈkrəʊmiəm/
[uncountable] (symbol Cr)
- a chemical element. Chromium is a hard grey metal that shines brightly when polished (= made smooth and shiny by being rubbed) and is often used to cover other metals in order to prevent them from rusting.
铬 - chromium-plated steel
镀铬的钢
Word Originearly 19th cent.: from chrome + -ium. - chromium-plated steel