urban mining
短语释义与例句
n.
-
1.
The process of recovering rare metals through mechanical and chemical treatments.
不可数
词源
Coined by Japanese professor 南條道夫 (Michio Nanjo) in 1988.
来源：wiktionary
The process of recovering rare metals through mechanical and chemical treatments.
Coined by Japanese professor 南條道夫 (Michio Nanjo) in 1988.
来源：wiktionary