Technology of deep and small hole finishing has been researched on emphasis for its wide range application and hard machining.

对分析总结了国内外小直径深孔加工技术，介绍了当前孔加工的最新技术和国内在这方面的研究情况。

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Based on summarizing machining technology of deep and small hole, an introduction about most advanced technology and internal research is given.

对分析总结了国内外小直径深孔加工技术，介绍了当前孔加工的最新技术和国内在这方面的研究情况。

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Because of the cantilever processing, especially the small hole, deep hole and hard workpiece processing, the rigidity of the tool system is particularly important.

因为是悬臂加工，特别是小孔、深孔及硬质工件的加工时，工具系统的刚性尤为重要。

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"The moment you start talking about such massive debts people stop being so careful... they realise they're in a deep hole and small amounts of effort won't dig them out again, " he said.

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