导轮架进给导轨采用燕尾形滚针导轨，进给用差动丝杆；
The regulating wheel feed slide is supported on dovetail needle roller guideway and a differential leadscrew is used for performing feed motion.
导轮架进给导轨采用燕尾形滚针导轨，进给用差动丝杆；
The regulating wheel feed slide is supported on dovetail needle roller guideway and a differential leadscrew is used for performing feed motion.
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