糙米与白米均产自于同一种作物，只是白米经过了精加工，研磨掉了更多的外壳。
Brown and white rice both come from the same plant - but white rice is more highly processed, with more layers stripped away.
最普通的精加工工序是用机械的方法，如研磨，磨削或用磨料。
The most common finishing operations are mechanical, such as milling, grinding, or polishing with abrasives.
目前有平面磨床，内外圆磨床，无心磨床，双平面研磨机，机械钻石抛光等设备，基本满足了对陶瓷的精加工。
Precision processing of ceramics is basically achieved equipped with surface grinder, internal and plain grinder, centerless grinder, biplanar grinder, mechanical diamond polisher, etc.
通过理论分析和实验的手段对模具精加工技术——反求工程和磁粒研磨技术的结合进行了分析。
The finishing machining technology of the mould & die has been discussed by the theoretical and experiment methods in the article.
首先，本文在分析了钛合金深孔精加工的基础上，提出了超声振动深孔研磨的加工方法并研制出相应的加工装置。
Firstly, based on the analysis of deep-hole finish machining of titanium alloy, we presented ultrasonic vibration deep-hole lapping and designed ultrasonic vibration deep-hole lapping device.
因此，将超声振动加工技术应用于深孔研磨加工中，为难加工材料的深孔精加工开辟了一条新的途径。
Therefore, it is a new way for difficult-to-cut material to deep-hole finish machine by applying ultrasonic vibration machining technology to deep-hole lapping.
因此，将超声振动加工技术应用于深孔研磨加工中，为难加工材料的深孔精加工开辟了一条新的途径。
Therefore, it is a new way for difficult-to-cut material to deep-hole finish machine by applying ultrasonic vibration machining technology to deep-hole lapping.
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