Jacking pipe joint hoisting device and construction method thereof
Aircraft passenger emergency alarm communication system
Hammer type gantry crane for collaborative slipway operation
Solid fuel gas starter for fuel gas self-pressurization
Assembly type galvanized steel sheet water tank for indoor decoration
Multi-mode electric steering engine suitable for supercavitation aircraft
Combined dead steam condenser of underwater vehicle power system
Intelligent vehicle door opening induction control system and control method thereof
Long-time ultra-high-temperature ablation resistant gas vane assembly
Elevator intelligent disinfection device and method and storage medium
Hoisting tool of large bottom-mounted part for steel sheet rolling mill
Heating device suitable for coupling water pipeline of rail flaw detection car