文章对椭圆形开孔的形状、圆筒体周向斜接管和圆筒体轴向斜接管的开孔三种情况分别进行了分析。
This paper makes the analyses on three cases which are oval opening, the opening on cylinder's circumferential miter tubes and the opening on cylinder's axial miter tubes respectively.
鹅头形钢板头部设计有椭圆形螺丝孔内侧面设计有较深的槽纹；
Goose head shaped steel plate head has oval screw bore, there is deep slot on the inner side;
接触孔（19） 的平面形状为椭圆形。
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