Hemispherical string type universal positioning clamp
Hatch cover inflation and deflation loading test system and use method thereof
Goods delivery control method and device, refrigerator and goods delivery device
Full-power power takeoff and traveling locking method for full-power power takeoff
Forming process of fireproof door leaf with escape channel
Flow debugging method and system for ship cooling water system
Field damage assessment method for structure static test and thermal strength test
Fabricated building automatic assembly production line system
Energy-saving and efficient pipe belt type automobile radiator