基本解釋[地質(zhì)] 砂礦床；砂積礦床；砂礫礦床英漢例句雙語(yǔ)例句Placer deposit is highly developed in USSR.蘇聯(lián)的砂礦礦床比較豐富。A middling placer deposit of tin has been discovered in Jiudaowan district.九道灣地區(qū)已發(fā)現(xiàn)中型砂錫礦床。Up till now several grains of diamond have been found in the Sinian, Triassic and Cretaceous clastic rocks, but in the lower reach the river there existed Quaternary industrial diamond placer deposit.在震旦系、三疊系和白堊系碎屑巖中均找到共約數(shù)顆微粒金剛石，而在沅水下游則富集有第四紀(jì)工業(yè)砂礦床。placer deposit更多例句詞組短語(yǔ)短語(yǔ)placer r deposit 砂積礦床placer gold deposit 砂金礦床the placer gold deposit 砂金礦體aeolian placer deposit 風(fēng)成砂礦床offshore placer deposit 近海砂礦placer deposit更多詞組專業(yè)釋義地球科學(xué)砂積礦床砂礫礦床砂礦床