valley placer是什么意思


中文翻译河谷砂矿

网络释义

1)valley placer,河谷砂矿2)river bed placer,河床砂矿3)palaeo-valley type mineralization,古河谷型矿化4)channel sandstone type uranium deposit,河道砂岩型铀矿5)incised-valley-filled channel sand-bodies,谷地充填河道砂体6)Naphrite Placer Deposit(HeMo Jade ore)resources,软玉砂矿(河磨玉矿)资源

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