Robust adaptive factor graph intelligent iron shoe navigation system and algorithm
Water cooler for cooling motor of water-jet propulsion device and working process thereof
Bottom support hydraulic type liftable water spraying propelling device and using method thereof
Method for discharging materials in LNG (Liquefied Natural Gas) cabin of dual-fuel container ship
Nozzle submerging type water-jet propeller capable of backing up and working method thereof
Novel water-jet propulsion pump device structure and operation method thereof