Y-shaped formation configuration and reconstruction method of low earth orbit satellites
Worm gear for automobile steering engine and manufacturing method of worm gear
Wire threading rod convenient to operate and for indoor hoisting
Wireless sensing ocean monitoring platform with power generation function
Wirelessly-controlled multifunctional crawler-type line construction load-bearing transport vehicle
Wind tunnel test propeller blade angle adjusting device and adjusting method
Wind-solar-coupling foundation-pit-less energy-saving elevator system based on Internet of Things