Aiming control device for rope projectile launching, aiming method and launching system
Automatic disassembling, assembling and maintaining device for paying-off tackle
Quick charging device based on wireless charging technology
Battery protection method and device for electric vehicle and electronic equipment
Cover plate hoisting device for cable trench maintenance
Safety monitoring system of electrical system of passenger train and passenger train
Gas taking and draining valve and gas storage cylinder
Dynamic wireless power supply platform for unmanned aerial vehicle and power supply method thereof