... alluvial meadow soil 冲积性草甸土 alluvial ore deposit 冲积矿床 alluvial plains 冲积平原 ...
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溆浦砂锡矿床赋存在第四系冲积层中锡石主要富集在底部砂砾石层。
Placer tin deposit in xupu occurs in alluvial sediment of quatemary system and cassiterite chiefly concentrates at the bottom of gravel layers.
自矿床分离而散落于溪旁基础岩石上，逐步被沙土覆盖，形成冲积性砂。
Separated from the deposit and scattered on the river side of the foundation rock, and gradually be covered with sand, forming alluvial sand.
溆浦砂锡矿床赋存在第四系冲积层中，锡石主要富集在底部砂砾石层。
Placer tin deposit in Xupu occurs in alluvial sediment of Quatemary SyStem and CaSSiterite chiefly concentrates at the bottom of Gravel layers.
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