00922727-n 'mining valuable minerals from a placer by washing or dredging';
 
汉语 采 砂矿 , 采砂矿
英语 placer mining
Definitions
日语
貴重な鉱物を洗浄や浚渫によって砂鉱から採掘すること
英语
mining valuable minerals from a placer by washing or dredging
Relations
Hypernym: mining
Semantic Field: actn
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Maintainer: Francis Bond <bond@ieee.org>