placer deposit 中文意思是什麼
placer deposit
解釋
積砂礦床-
A place where a placer deposit is washed to extract its mineral content
砂礦開采地一個用來清洗出有用礦物的砂礦開采地 -
Wudi has three world - rare shell placer deposit belts. stretching a total distance of 56 kilometers, these deposits have total reserves of 360 million tons
無棣縣擁有3條長56公里,總地質儲量3 . 6億噸世界罕見的貝殼沙礦帶,具有很高的開采利用價值。
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