英语词汇“placer mining”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

单词	placer mining
释义	placer mining noun /ˈpleɪsə maɪnɪŋ/ /ˈpleɪsər maɪnɪŋ/ [uncountable] (North American English) jump to other results the process of getting gold or other valuable minerals, usually from a river or lake, by washing away the sand that surrounds it placer mining operations
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