| 摘要 |
In wheel counterbalancing apparatus a wheel is mounted in a pair of spaced bearings for rotation about reference axis and sensor means are provided for sensing reaction forces at each of the bearings resulting from imbalance of the wheel. Means are provided for sensing when the wheel is at or approaching its maximum rotational speed and for transmitting a signal to hold information displayed by digital d1splay tubes in a displayed state and at the same time to brake the drive to the wheel.
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