三星se-s084b采用的主动滚球均衡（ball-balancing）体系，能够稳定盘片，可正在多类状况下外放使用。另外不仅收持12厘米的尺度盘片，更能够收持8厘米的dv用小盘。
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Automatic Ball Balancing System 自动滚珠平衡系统
automatic ball balancing device 球式自动平衡装置
balancing on a ball 滚球平衡
If you have problems balancing the weight of your foot to the pedal, it helps to keep a halved tennis ball right under the accelerator pedal lever.
如果你难以平衡脚上的重量，在油门踏板下放半个网球将对你有所帮助。
Jacob is balancing a ball on his forehead.
雅各能够把一个球平衡的放在额头。
At exercise my balance was really better and I actually balanced on the wabble board while pitching the medicine ball back and forth. My doctor said I was walking and balancing better.
作康复的时候，我的平衡真的好多了，我摆动板上抛接实心球的时候，真的能够平衡自己了。
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