本文利用角度投影计算法对直纹蜗杆轴向齿形进行了分析与计算。
In this paper, the axial section profile of worm with straight generatrix is analyzed and calculated according to Angle projection calculating.
本文从新的角度提出了一类在计算机辅助制图情况下具有灵活、通用性的多焦点地图投影方法。
Viewing from a new Angle, the authors of this paper put forward a CAC-based general multi-focal projection with much flexibility and universality.
同时区分了刀刃在坐标平面上的投影角和刀面相对坐标平面的倾斜角，并用实例计算说明这两种角度有时差值较大。
Difference between the angles of edge projections and the angles of the intersections of surfaces and coordinate planes are raised in this paper.
然后根据冠脉造影系统的透视投影模型得到两幅不同角度的造影图像之间的几何变换关系，以及空间点三维坐标的计算方法。
Then geometrical transformation matrix between views is obtained based on perspective projection model for X-ray angiography system, and 3D coordinate of spatial points are calculated.
采用最佳拟合直线方法，计算产品模型投影轮廓多边形的长轴方位，并据此计算旋转变换所需转动角度。
Strategies of cubic projection and rotation transformation were put forward in this paper in order to transform the complicated 3D issues into 2D planar issues.
采用最佳拟合直线方法，计算产品模型投影轮廓多边形的长轴方位，并据此计算旋转变换所需转动角度。
Strategies of cubic projection and rotation transformation were put forward in this paper in order to transform the complicated 3D issues into 2D planar issues.
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