pervious bed是什么意思 pervious bed在线中文翻译

pervious bed

pervious bed 双语例句

1. At the river embankment of Guangji in Anqing, the upper layer at the foundation part of embankment sections is weak pervious overburden and the strong pervious sand bed is in lower layers and they are typically double layer structure foundation.
   安庆广济江堤部分堤段堤基上层是弱透水覆盖层，下层是强透水砂层，为典型的双层结构地基。

pervious bed