Silicon-based self-sealed miniature thruster and preparation method thereof
Machine room-free elevator UPS rescue control circuit
Automatic cooling device for disc brake of petroleum drilling rig winch
Space traffic characteristic Kernel-KNN matching road traffic state obtain method
Synchronous assembly tool used for seat backrest and seat foam
Remote sensing satellite space debris evasion maneuvering method based on ground-track keeping needs
Layout structure for laterally-arranged water tank of passenger car longer than 10 meters
Electronically-control type differential lock control mechanism and method