Underwater dry cabin wellhead pipeline cabin-penetrating sealing structure
Caliper type rapid anchor disassembling jack and application method thereof
Deep sea drilling blowout preventer transport vehicle
Water-pump-free sand-water stirring system and engineering ship
Gob-side entry retaining unit support and pier column combined simulation device and test method
Torque tool capable of switching torque gears for ROV
Suspension device for monorail crane and monorail crane
Parallel gantry rolling walking temporary supporting robot
Subway station platform-platform transfer system with separated left and right lines
Installation method of rail type transportation lifting device in tunnel
Horizontally movable vertical shaft rope guide and regulating method thereof
Seabed multidirectional drilling device and method for marine geological exploration
Method for replacing filling pipe in vertical steel sleeve