Points out that we must enlarge puts in new technical research,new product development,existing equipment improvement and jobsite technological transformations and other various aspects,sim...

• 指出必须在新技术研究、新产品开发、现有设备改进及现场技术改造等各方面加大投入,同时不断优化工艺布置、完善标准规范,以促进高产高效斜井的设计和建设。