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1·The NC boring lathe equipped with this kind of deformable arm can bore special shaped pin hole for piston efficiently, and meanwhile meet the demand of micro meter accuracy.

装有这种新型变形镗杆的NC镗床能高效地镗削活塞异形销孔，并达到微米精度的要求。

2·The NC boring machine equipped with this kind of deformable bar can bore special-shaped pin hole in piston efficiently, and meanwhile meet the demand of micro-meter accuracy.

装有这种新型变形镗杆的NC镗床能高效地镗削活塞异形销孔，并达到微米精度的要求。

3·It proposes measures of improving piston structure design and adopts the structure of cast aluminum bronze embedded in the hole in the piston pin bushing.

据此提出了活塞结构改进设计措施，采用了在活塞销孔内嵌入铸铝青铜衬套结构。

4·Research of Heterogeneous Type Piston Pin Boss Hole Closed Loop Processing System.

异型活塞销孔闭环加工系统研究；

5·Research on boring mechanism for piston noncircular pin hole;

简述了采用活塞异形销孔的必要性及其结构特点。

6·Using a special pin hole in design will be an effective method to change stress concentration on inside of piston, improve safety coefficient of skirt...

采用异形销孔设计将是改变活塞内侧应力集中，提高裙部结构的安全系数，减少活塞裙部裂损的有效方法。