In order to adapt the need of loading and unloading drill rod of iron gate-opening machine for large-scale blast furnace, the new change rock drill machine is designed.
为适应大型高炉开铁口机的装卸钎杆需要，设计开发了新型换钎机。
Miners watch as the drill machine 'Sissi' breaks through the rock on the final section of the Gotthard Tunnel.
打通山体的工人正在查看钻孔机器“茜茜公主”打穿圣哥达隧道最后一部分的岩石。
This design draft , mainly about the technological process of YTP26 Air-leg Rock Drill, and elabora about the milling machine typical jig design.
本设计主要是对YTP26型气腿式凿岩机机体进行工艺规程的拟订，及车床与铣床典型夹具的设计进行全面的阐述。
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