By old conveyor system technology transform, this paper increasing picking rack system, it obtains good economic.

通过对老运输系统技改，自制安装选矸系统，取得良好的经济效益。

youdao

By old conveyor system technology transform, this paper increasing picking rack system, it obtains good economic.

通过对老运输系统技改，自制安装选矸系统，取得良好的经济效益。

youdao