Seabed drilling and grab bucket integrated sampling equipment and use method
Crawler transportation type anchor support integrated equipment for coal mine tunnel
Hydraulic support pushing jack for half-cutting coal mining technology
Shield tunneling machine cutterhead, cutter changing method and shield tunneling machine
Sea-to-sea directional drilling and crossing operation system and method
Rail self-moving equipment train and operation method thereof
Derrick lifting holding pole for oil well and lifting method
Crawler-type horizontal directional drilling television imaging device
Hydraulic support pushing jack for half-well cutting coal-mining process
Stall protection device for trackless rubber-tyred vehicle
Precise filling intelligent robot behind crawler-type frame based on improved hydraulic support