alluvial deposit冲积层: alluvial deposit; alluvion; ...矿床: mineral deposit; ore deposit ...冲积矿床: alluvial deposit; alluvial ore deposit; alluvial placer冲积矿床开采: alluvial mining深埋冲积矿床: deep leads下载手机词典可随时随地查词查翻译关注微信公众号:chachacidian,回复:冲积层;冲积矿床,即可在微信中查询翻译