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关注：1
2013-05-23 12:21
求翻译：但目前中小型车床多采用不变速的异步电动机拖动，它的变速是靠齿轮箱的有级调速来实现的，所以它的控制电路比较简单。是什么意思？ 待解决
 悬赏分：1
- 离问题结束还有
但目前中小型车床多采用不变速的异步电动机拖动，它的变速是靠齿轮箱的有级调速来实现的，所以它的控制电路比较简单。
问题补充： |
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2013-05-23 12:21:38
But do not use more small and medium sized lathe variable speed induction motor drag, it relies on speed gearbox to achieve a level of speed, so it's relatively simple control circuit.
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2013-05-23 12:23:18
But the small and medium-sized lathes used is not variable speed of asynchronous motors, drag it for variable speed gear box is a stepless speed control, so it's control circuit is relatively simple.
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2013-05-23 12:24:58
But the present middle and small scale lathe uses the asynchronous motor dragging which does not change speed, its speed change is depends on, therefore its control circuit which the gear box the having steps velocity modulation realizes quite is simple.
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2013-05-23 12:26:38
But small and medium lathes that do not drag the variable-speed asynchronous motors, variable speed is implemented on the gearbox to the speed, so the control circuit is relatively simple.
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2013-05-23 12:28:18
But do not use more small and medium sized lathe variable speed induction motor drag, it relies on speed gearbox to achieve a level of speed, so it's relatively simple control circuit.
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