river bed placer

基本解释河床砂矿

网络释义

1)river bed placer,河床砂矿2)sandy bed river,砂质河床3)sand river,(干)砂河(床)4)channel sand,河床砂<地>5)channel sands,河床砂层6)bed dume,河床砂丘

用法和例句

Channel pattern discrimination for sandy bed rivers and gravelly bed rivers;

砂质河床与砾石河床的河型判别研究

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