| 1 | Its core is formed by two hubs that have a five-ringed structure at their core. | |
| 2 | He can swap out the stereo, add different wheels and tires, change the exhaust system -- whatever. | |
| 3 | Each hub is flanked by two "wheels, " each consisting of a three-ringed structure. | |
| 4 | Because hub motors can deliver power independently to each wheel, tricks like four-wheel-drive are possible. | |
| 5 | But the real guts of the Goldwind machines - the generators, hubs and nacelles, or turbine housings - were built in China. |