Environment-friendly seabed mineral resource development device and development method
Oil-electricity hybrid power rope-tightening-free workover rig
Mine plot aerial seeding vegetation recovery method based on unmanned aerial vehicle
Combined type light ultra-soft foundation reinforcing platform and method
Transportation sledge for under-pressure operation equipment
Method for disassembling double-layer shell shield tunneling machine in tunnel
System for relieving secondary micro-pressure waves of high-speed railway tunnel
Split type coal mining machine carrier and speed synchronization method
Underground pneumatic monorail hoist and intelligent control system thereof