The paper introduces the traits, operating technology and the effect of the environmental-permeable face brick. 摘要文章介绍一种环保型透水地面砖的特点，施工工艺和使用效果。
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。
