Duralumin
/djʊəˈræljʊmɪn/noun
mass noun
- trademark a hard, light alloy of aluminium with copper and other elements〈商标〉杜拉铝, 硬铝。
词源
early 20th cent.: perhaps from Latin durus 'hard' + ALUMINIUM, but probably influenced by Düren, the name of the Rhineland town where such alloys were first produced.