Tunnel soundproof walls equipped with ventilation facilities
Seabed multidirectional drilling device and method for marine geological exploration
ENERGY SUPPLY MODES FOR ELECTRICALLY POWERED MINING OR CONSTRUCTION MACHINES
ENERGY SUPPLY MODES FOR ELECTRICALLY POWERED MINING OR CONSTRUCTION MACHINES
Sensor mounting and debugging device for deep roadway anchor rod support
Underwater control excavation system for diversion canal and construction method
Precise filling intelligent robot behind crawler-type frame based on improved hydraulic support
Geological exploration equipment for engineering construction
Evacuation channel structure, subway station and escape method
Segmento de tubo de doble pared y método para producir dicho segmento de tubo
VEHICLE FOR INSTALLING ANCHORS IN AN UNDERWATER SUBSTRATE
VEHICLE FOR INSTALLING ANCHORS IN AN UNDERWATER SUBSTRATE
Method and apparatus to install, adjust and recover buoyancy elements from subsea facilities
METHOD AND APPARATUS TO INSTALL, ADJUST AND RECOVER BUOYANCY ELEMENTS FROM SUBSEA FACILITIES
Pneumatic-electric combined coal mine robot and using method
Material cooperation equipment for roadway rescue equipment