To adopt boring technology to process hole alike ellipse sphere in the harder material and to explore devising method of cutting tool.
采用镗削加工工艺加工硬度较高材料的椭球孔，并探讨刀具设计方法。
To adopt boring technology to process hole alike ellipse sphere in the harder material and to explore devising method of cutting tool.
采用镗削加工工艺加工硬度较高材料的椭球孔，并探讨刀具设计方法。
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