placer gold

常見例句

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(fā)現(xiàn)對尋找廣西砂金礦，拓寬金礦資源的思路，具有現(xiàn)實(shí)意義。
The studied platinum-gold placer occurs in Quaternary alluvial-diluvial sediments within a piedmont valley of ultrabasic rocks, Northwest China.
該鉑-金砂礦產(chǎn)于超基性巖體山前谷地的第四紀(jì)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.
文中通過對于黑龍江省呼瑪河北部地區(qū)前寒武系砂金資源總量予測邏輯信息法的計(jì)算結(jié)果分忻，研究了該方法的地質(zhì)效果。