The only major difference is that boring jigs are normally fitted with a pilot bushing or bearing to support the outer end of the boring bar during the machining operation.
唯一最重要的差别是镗夹具一般用于控制衬套，或者在机器操作时支撑镗杆的外端。
The only major difference is that boring jigs are normally fitted with a pilot bushing or bearing to support the outer end of the boring bar during the machining operation.
唯一最重要的差别是镗夹具一般用于控制衬套，或者在机器操作时支撑镗杆的外端。
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