基本解釋[礦業(yè)] 砂礦開采；[礦業(yè)] 沖積礦床開采英漢例句雙語例句Placer mining: Oldest method of recovering gold from alluvial deposits.砂礦 古河床里的金砂礦床。Mechanized placer mining, with special devices for washing and separating waste from valuable minerals, is used in productive alluvial deposits.機(jī)械化砂礦開采用于含礦量豐富的砂礦床．利用專門設(shè)備來淘洗、分離廢物與有用礦物。Gravel cemented geological body, called solid formation, has been found in the fluvial sediment of Quaternary system in the exploration and mining of alluvial gold deposit in recent years.近年來在砂金礦床的勘探和開采中，發(fā)現(xiàn)在第四系河流沖積物中存在砂礫石膠結(jié)地質(zhì)體，被稱為膠結(jié)層。原聲例句He is one of many who have flocked to the Kangari hills in southern Sierra Leone to find small fortunes in the hard graft of alluvial gold mining.權(quán)威例句De Beers is active in every category of industrial diamond mining: open-pit, underground, large-scale alluvial, coastal and deep sea.FORBES: Anglo American Receives Final Regulatory Approval for De Beers Acquisitionalluvial mining更多例句詞組短語短語alluvial l mining 砂礦開采alluvial gold mining 砂金礦開采mining alluvial deposit 沖積層下采煤alluvial mining更多詞組英英字典柯林斯英英字典 a method of extracting minerals by dredging alluvial deposits alluvial mining劍橋字典alluvial mining柯林斯字典專業(yè)釋義地球科學(xué)沖積礦床開采砂礦開采