The US could break its dependence on China for many critical minerals if metals found in the waste from existing American mines were used rather than discarded, new research has found.
新研究發現,如果將現有美國礦山產生的廢料中所含金屬加以利用,而非棄置,美國就有可能擺脫對中國在多種關鍵礦物上的依賴。
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