placer deposit
常見例句
- 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。 返回 placer deposit