marine alluvium

• 海洋冲积层

marine alluvium的用法和样例：

例句

1. This saphire deposit is occurred in the Holocene alluvium.
   矿床赋存于全新统冲积层。
2. Much of the higher reflecting alluvium and limestone fell along the toe portion of the characteristic curve.
   大部分反射率较高的冲积层和灰岩都位于特性曲线的趾部。