Vibratory tapping is a new kind of machining method.
振动攻丝是一种新型的加工方法。
Popular brand without skills, tapping card without method.
旺牌无技巧，攻牌无方法。
The research of this paper can improve and perfect technology and method of impact tapping.
本文的研究结论对于改进和完善冲击攻丝的技术和方法具有理论上的指导作用。
Cold form tapping process is an effective method to enhance fatigue strength of internal thread.
内螺纹冷挤压成形是提高内螺纹疲劳强度的有效方法。
Cold form tapping process is an effective method to enhance fatigue strength of internal thread.
内螺纹冷挤压成形是提高内螺纹疲劳强度的有效方法。
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