“冲积层”怎么读？

砂矿开采: 从冲积层回收黄金的最古老方法.Placer mining: Oldest method of recovering gold from alluvial deposits.简要分析了位于巨厚冲积层表土下,竖井破坏的特点及力学机理.The characteristic and mechanical mechanism of shaft failure under mega - thick alluvial surface la...

“冲积层”的英语可以翻译为：[地质] alluvial deposit，alluvion，alluvium ...