The wheel engages with that wheel and turns it.
这个轮与那个轮相啮合而开始转动了。
If one wheel has no traction, power will flow to that wheel and the other wheel will remain stationary.
因此,哪个车轮丧失牵引力,功率就会流向哪个车轮,而另一个车轮将保持静止。
And so the net, the sum of all forces on that object there is no net force on that wheel but there is a net torque, and that's why it's going to precess.
所以综合,物体受的所有力,车轮不会受到净力,但是有一个,净作用力,那就是我要推进的。
The driver follows the directions and makes turns based on sounds that the steering wheel makes when it is turned.
VOA: special.2009.11.03
now I'm really fantastic at drawing this mechanical device, but you can imagine that dropping a weight can cause a paddle wheel to turn.
机械装置的时候,我真的很着迷,你可以想象,当重物掉落的时候会带动桨轮旋转。
Well, it turns out that people tended to give an answer close to the number that came up on the wheel of fortune.
结果表明人们会更愿意给出,接近他们刚才转出数字的答案
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