METHOD OF COLD DRAWING STEEL PIPES BEING EXTERNALLY CIRCULAR AND INTERNALLY NON-CIRCULAR IN CROSS-SECTION

• 1. 巴斯噶非圆—正弦非圆—非圆三轮同步带传动设计方法 [P] . 中国专利： CN106838160B . 2019.04.09
• 2. 巴斯噶非圆—巴斯噶非圆—非圆三轮同步带传动设计方法 [P] . 中国专利： CN106917851B . 2019.02.26
• 3. METHOD OF COLD DRAWING STEEL PIPES BEING EXTERNALLY CIRCULAR AND INTERNALLY NON-CIRCULAR IN CROSS-SECTION [P] . PL208899A1 . 1980-05-05

  机译： 冷拔钢管横截面为外部圆和内部非圆的方法

• 4. METHOD OF COLD ROLLING AND DRAWING STEEL PIPES BEING EXTERNALLY OF CIRCULAR AND INTERNALLY OF POLYGONAL CROSS-SECTION [P] . PL243931A1 . 1985-04-09

  机译： 轧制和拔制钢管的方法是在多边形的横截面的内部和外部

• 5. Heat and sound insulating pipe sleeve has circular outer cross-section, internal bore having non-circular, e.g. oval or elliptical, cross-section [P] . 德国专利： DE20122224U1 . 2004-11-18

  机译： 隔热和隔音管套具有圆形的外部横截面，内孔具有非圆形的，例如，圆形的。椭圆形或椭圆形，横截面

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• 1. 基于圆与非圆组合轨迹的数控机床误差分步测试与溯因新方法 [C] . 杜正春 . 第十二届设计与制造前沿国际会议（ICFDM2016） . 2016
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