| 1. | On circular curved line coordinate and its layout method
解析圆曲线坐标及其放样方法 |
| 2. | Setting out circular curve with the offset of arbitrary direction line method
任意方向线支距法测设圆曲线 |
| 3. | Circular curve data
圆曲线要素 |
| 4. | The analysis of broaden , tapered length relation and tapered formula of inter road surface of circular curve
圆曲线内路面变宽与渐变长度关系及渐变式分析 |
| 5. | This shows that their knowledge of the circle enabled them to calculate the coordinates along this vertical curve . accordingly , the construction workers followed precise dimensions in their executed circular curves
这表明他们的圆周知识使他们能够计算沿这个直立的曲线的坐标。因此建筑工人按照精确的尺寸用于完成圆周曲线。 |
| 6. | In this system the non - circular curve is fittd by twin arc spline curves 、 b - spline curve and nurbs - curve . moreover , the difference handle means is adopted by that difference generating way among the autocad2005
对于零件常用的非圆曲线,采用双圆弧样条曲线、 b样条曲线、 nurbs曲线来拟合,并根据它们在autocad2005中生成的方式不同而采用不同的方法来处理。 |
| 7. | The relation of radius of curvature and error as well as formulas of increasing parameters on condition of constant error are diverted . the equation of the line on the center of approximate circular arc is obtained ， and it can avoids the trouble that numerical solution owns possibility of no convergence and simplifies node calculation of non - circular curve
导出了曲率半径与逼近误差之间的关系和等误差条件下的参数递推公式，建立了通过逼近圆弧圆心的直线方程和圆心坐标计算公式.按这种方法用圆弧逼近平面参数曲线，不需要求解非线性方程组，避免了计算可能不收敛的麻烦，简化了非圆曲线的节点计算过程 |
