excavator

The excavators have dredged up nothing but mud.

掘只出了一些泥。

Give priority to develop and manufacture full-face excavator, large-tonnage hydraulic excavator, heavy-tonnage loader, autocrane series, medium and small tonnage and multifunctional loaders.

重点开生产全断面掘进、大型液压掘、大吨位轮式装、列汽车起重以及静液压式中小吨位和多功能装。

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。