New flow battery is expected to travel 240 miles on a single charge


Scientists at the Berkeley National Laboratory and General Electric Company of America are developing a water-based flow battery that is more powerful than traditional base station energy storage batteries and is expected to become the next generation of electric vehi

Why residential solar panels less than the expected power generation?

Reporter: A three-storey reinforced concrete residential renovation, by the way in the flat roof installed capacity of 4 kilowatts of solar panels. Panels are mounted on the panel, with a 30 degree angle of inclination towards the south and fixed horizontally. It is estimated tha

Non-circular gears, open-loop frame, numerical simulation, construction


1 The basic idea of ​​the mathematical model The shape of the tooth profile of the non-circular gear is not only related to the relative motion parameters of the workpiece and the tool, but also to the tooth profile of the tool.
When machining with a rack tool, since the

"NVC lighting" "BULL" and other 8 batches of energy-saving lamps failed

On April 7, Chengdu Industrial and Commercial Bureau announced the results of the quality inspection of energy-saving lamps in the fourth quarter of 2016. The nominal trademark was 8 batches of energy-saving lamps such as NVC Lighting BULL. In the fourth quarter of 2016, Chengdu Industrial and