Worm gear for automobile steering engine and manufacturing method of worm gear
Wireless sensing ocean monitoring platform with power generation function
Wind-solar-coupling foundation-pit-less energy-saving elevator system based on Internet of Things
Winding switching device and method applied to high-frequency transformer of charging module
Whole-ship monitoring alarm system of offshore wind power installation platform
wheel rim based on combination of DH structure and DW structure and manufacturing method thereof
Waterproof wear-resistant sound-insulation automobile carpet fabric and manufacturing method thereof