So it finds wide application in the fields of mineral and geological coring exploration, hydrogeological water well drilling, large diameter rock embedded foundation p...

 
  • 在复杂地层地质岩心勘探、水文水井钻凿、大直径硬岩基桩孔钻进等领域全面应用,取得了显著经济与社会效益。
今日热词
目录 附录 查词历史