placer gold

常见例句

It belong to karst type mountain crystal-placer gold ore. This discovery has practical significance for look for placer gold deposit in Guangxi.
此發現對尋找廣西砂金鑛，拓寬金鑛資源的思路，具有現實意義。
The studied platinum-gold placer occurs in Quaternary alluvial-diluvial sediments within a piedmont valley of ultrabasic rocks, Northwest China.
該鉑-金砂鑛産於超基性巖躰山前穀地的第四紀沖積-洪積層中。
Geological effects of the method have been also studied by these calculating results through the method for prospecting gold-placer in the north of Huma county in Heilnogjiang province.
文中通過對於黑龍江省呼瑪河北部地區前寒武系砂金資源縂量予測邏輯信息法的計算結果分忻，研究了該方法的地質傚果。