Lattice type combined tower crane cable in foundation pit and erection method thereof
Vertical lifting and conveying system for open-pit mine trucks
Ship body bracket and whole-ship lifting and transporting launching method
Controller of permanent magnetic synchronous motor for electric vehicle and vehicle-mounted system
Underwater suspended dynamic back-jointing tool and back-jointing method of mooring anchor leg
Magnetic friction coupling elevator disk brake utilizing magnetic field to regulate friction
Automatic folding type flap gate of construction lifter
Drive axle with main reducer having hydraulic retardance function
Navigation system for vehicle and navigation service method for the same
METHOD, EQUIPMENT AND DEVICE FOR PLANNING VEHICLE SPEED