镗杆衬套
Boring rod bushing
以上为机器翻译结果，长、整句建议使用 人工翻译 。
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.
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