concrete cut off wall

• 防渗墙

concrete cut off wall的用法和样例：

例句

1. The article recommends the technique arguments of the wafery excavator and the technics of building antiseep concrete wall using by it.
   摘要介绍了薄型抓斗的技术参数及薄型抓斗建造混凝土防渗墙的主要施工工艺。