| 摘要 |
The power switching system is composed of a power drive part to deliver driving motor's(1) power to the selected driving part, a rack driving device to move a rack(3), a power switching device to deliver driving motor's(1) power selectively to a fixed gear(4) and rack driving device, an over-stroke adjusting device to drive the power switching device, and a position fixing part to fix the position of the power switching and the drive part.
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