Safety gear reset device, elevator and safety gear reset method
Muddy water imaging remote-control unmanned submersible and design method thereof
End beam buffer device for electric single-beam crane
Ship draft detection method based on parallel multi-beam sonars
Ship hydraulic steering engine follow-up steering control method
Generator end cover hoisting tool and using method thereof
Method for multi-point control over full-revolving steering oar through multi-electric-shaft handle
Oil consumption, driving track and safe driving integrated remote monitoring system
Shake-reducing device of multi-purpose ship liquid oil tank
Charging pile facilitating installation of charging gun
Method for assisting portal crane to quickly align to container by adopting laser ranging rod
Cooling control device and cooling control method for electric vehicle