圆曲线

圆曲线的详细测设有火苗从废气排放管窜出；

Setting - Out Circular Curve In Detail flame blowing out from exhaust pipe ;

浅析测设圆曲线的新方法

New method to survey & determine circular curve

在这样的曲线中有希皮阿斯发明的割圆曲线。

Among such curves are the quadratrix invented by hippias .

GIS中3维空间圆曲线的不确定性εσ模型

Uncertainty ε _ σ Model of Spatial Circular Curve Features in GIS

GIS中圆曲线的不确定性模型

Uncertainty Model of Circular Curve Features in GIS

以三次B样条曲线为例，给出了其建模及可视化结果，进一步地将该结果与折线及圆曲线的情况进行了比较。

This result is visualized and further compared with the results based on line segment and circular curve line error models .

基于AutoCAD平台的非圆曲线数控加工自动编程

Auto-programming for NC Machining of Aspheric Curve Based on AutoCAD Platform

基于不确定性理论及概率统计理论，研究GIS中3维空间圆曲线的不确定性模型。

Based on the uncertainty and statistic theory , an uncertainty model for three-dimension circular curve in GIS is developed .

浅谈AUTOCAD在圆曲线道路测量放线中的应用

The Application of AUTOCAD in the Measuring and Setting out of the Circular Curve Road

文章论述了基于AutoCAD软件平台的非圆曲线零件的数控加工编程的设计问题。

The design of non-circular curve spare parts numerical control machining program that is based AutoCAD software is discussed .

用直线段逼近非圆曲线的算法总体来说有以下三种，即：等间距法&使每段逼近直线在X轴上的投影相等；

There are three algorithms in the approaching non-circularity curve with line , namely the equal interval algorithm , the equal arc algorithm and the equal error algorithm .

本文分析了二次曲线拟合面积计算中存在的问题，比较了二次拟合曲线与用AUTOCAD的多义线拟合命令拟合的圆曲线间的差异。

This paper discusses the problems in the conic fitting of area calulation , and compares its differences to circular curve fitting with the multi lines command of Auto CAD .

为提高程序运行效率和程序传输效率，对非圆曲线插补、孔系加工两种典型工序的NC程序进行了优化。

In order to improve program operating efficiency and transmission rate , NC program is optimized for the two typical working procedure & non-circle curve interpolation and holes processing .

基于FANUC系统设置固定的非圆曲线插补调用指令

Setup of the Fixed Non Circular Curve Interpolation Call Instruction Based on FANUC System

介绍基于VB开发环境，实现数控机床编程中非圆曲线等误差法圆弧逼近节点计算的方法，并利用程序实现刀具轨迹线NC代码的自动生成。

The calculation of nodes is introduced to approach non-circular curve with arc by using the equal-error arc method in NC programming . And by programming NC code can be written automatically .

本文详尽地推演了公路凸型曲线中的缓和曲线长度L（0）和圆曲线半径R的计算公式。

In this paper . the authors give the calculation formula of the length ( L_ ( 0 )) of transition curve and the radius ( R ) of circular curve .

NNCC非圆曲线自动编程系统

NNCC automatic programming system for noncircular curves

介绍利用AUTOCAD内嵌的VBA开发环境，实现数控编程中的等误差法直线逼近非圆曲线节点计算的方法，并用程序实现了刀尖轨迹线的模拟。

To implement the equal-error method of using beeline to approach the non circularity curve in NC programing the development environment of VBA embedded in Auto CAD is introduced , at the same time the tool path using the program is simulated .

组成路线的线型都可以分解成直线、圆曲线和缓和曲线。按照线型的不同，详细介绍在高速公路测量中，使用Casiofx-4800p袖珍计算器把测量坐标变换为路线里程的方法。

According to the different route , the paper introduced a method of converting survey coordinate into route mileage by CASIO fx-4800p calculator .

为此对现有的投影公式进行了改进，在变换后的俯视图中使用圆曲线车道模型及基于密度的Hough变换进行车道识别。

A lane detection approach based on improved transform mapping formulas was developed to solve these problems with the arc lane model and the density based Hough transform used in the transformed vertical view to detect the lane .

用该算法组成的线切割编控软件与国内线切割同类软件相比在加工条件相同的情况下，获得了用圆弧代替非圆曲线其3B程序最少、加工时间最短的良好效果。

Comparing to the soft of HS-WEDM at the same condition in my country , the number of 3B program and the work time is minimum in the case which arc approximately substitute non-circular cure .

根据数控加工中非圆曲线轮廓直线逼近节点计算原理，介绍运用AutoCAD进行节点计算的方法。

A computation method of the intersection and tangent point with AutoCAD is introduced in this paper , to which the compiling , snapping and measuring functions of AutoCAD were applied according to the linear approximation principle of node computation for non circular curve outline in numerically controlled machining .

对多面体及Beizer曲线与圆曲线的形态算法进行了详细讨论。

The principle of this method is also proved and the morphologic addition algorithms for two polygons and Beizer 's curves with circle are provided .

NNCC非圆曲线自动编程系统能自动编制出加工平面凸轮各种非圆数学曲线和列表曲线的数控加工程序。本文介绍此系统的用途、工作原理和运行操作。

NNCC automatic programming system for non-circular curves can automatically make NC program of non-circular mathematic and listing curves for working plane cams , This paper introduces the use , principle and operation of the system .

一种用大的圆曲线书写的普通书写的清晰的形式。

A clearly written style of longhand with large round curves .

高等级公路圆曲线施工中的精确测设

Accurate surveying and fixing in curve construction of higher rank road

几种典型非圆曲线编程误差变步长控制算法

Varied Step-length Control Algorithm of Some Typical Noncircular Curve Program Error

道路交叉圆曲线的测设

The Method of Stakeout of Circle Curve in Intersection of Road

公路圆曲线测设参数的计数器编程计算法

Calculation Methods for Parameters of Road Circle Curves by Programmable Calculator

自由测站法测设道路圆曲线

Setting out Circular Curves of the Highway with the Free-station Method