单词 | gold-copper |
释义 | > as lemmasgold-copper gold-copper adj. that yields both gold and copper. ΘΚΠ the world > the earth > minerals > ore > [noun] > metal ore > gold-copper ore gold-copper1893 1893 Milwaukee (Wisconsin) Sentinel 2 Aug. 4/4 In San Juan country there is enough gold-copper ore produced to keep the Durango smelters in operation. 1921 Engin. & Mining Jrnl. 22 Oct. 650 He was developing his gold-copper mine..twelve miles north of Gold Hill. 2008 Calgary (Alberta) Herald (Nexis) 15 Mar. d2 (caption) A Nautilus Minerals geologist holds a piece of gold-copper ore recovered offshore. < as lemmas |
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