excavation
Construction preparation Survey and lay line Cut-off, drainage ditches Machine in place Excavation in layer Side slope protection Blasting design Survey location Drill in place Bored hole Load dynamite Safe warning Connecting wire and detonating Get rid of dangerous Removing warning Load stonework and convey Brush slop, clean bottom, and drainage
因篇幅问题不能全部显示，请点此查看更多更全内容