“冲积层”造句
2024年06月16日 05:54:15
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 layer are briefly analysed.
上部主要是近代河流
冲积层, 下部为倾 状
冲积层.
The upper part of the main river alluvium in modern times, the lower the pour - shaped alluvium.