查询词典 easement curve

As the rapid development of highway,the widening of easement curve segment is more and more at a premium,but the calculation of coordinates and length of inside and outside line is very complex,however,the introduction of this content is very little .

随着高速公路的快速发展，缓和曲线段的加宽越来越受到重视，但是加宽后的内外边线坐标和曲线长的计算非常麻烦，关于这方面的介绍也非常少，故通过理论计算，提出内外边线的坐标和曲线长的计算公式，具有一定的参考价值。

Easement curve was introduced, whereby curvature changes steadily form a straight line to the desired radius.

缓和曲线推出，即曲率变化，稳步形成一条直线，以达到预期的半径。

This paper briefly introduces the area calculation problem of a block,the boundary of which includes the easement curve or its parallel curve .

该文论述了以缓和曲线平行线为边界的地块面积的计算特点，推出了缓和曲线或其平行线弓形面积的严密计算公式，讨论了已知缓和曲线平行线弧长或坐标值计算弓形面积的问题，给出了相应的算例。

Based on the arc length formulae of the parallel to the easement curve and its property, this paper gives the parameter equations of the parallel to the easement curve taking the arc length itself as variable.

基于缓和曲线平行线弧长公式及其性质，给出了缓和曲线平行线以其自身弧长为变量的参数方程。

This paper narrates the theory method to determine measuring point s in the ubiety of center of road of first easement curve segment,circle curve segment and second easement curve segment,gives the source program of PC-E500 computer and explains data format in it.

讲述判定测点在道路中线第一缓和曲线段、圆曲线段、第二缓和曲线段的位置关系的理论方法，给出相应的PC-E500源程序，并对数据格式进行说明。

Because the curve radius of easement curve gradually changes, the formula for calculating the coordinates can not be obtained with the method of integration.

由于缓和曲线的曲率半径是逐渐变化的，不能用积分的方法求得其上点位坐标的计算公式，以往都是用级数展开进行近似计算。

Using the Visual-LISP language, the system software AutoCAD is developed secondary by editing the application program"The Calculation of Easement Curve", by which the route curve calculation can be combined with the curve diagramming, in order to simplify the complex calculation and to detect the calculation results with easy.

利用AutoLISP语言对系统软件AutoCAD进行二次开发，编制了&缓和曲线测设计算&等应用软件，使一系列的道路测设计算工作与作图相结合，使复杂的计算问题简单化，并易于检核。

The elements and methods of the line transect layingoff using the total setting station freely method of the total station from the straight segment to curve segment(easement curve and circular curve) are discussed,and the ways and means are introduced.

论述了从直线段到曲线段利用全站仪自由设站法测设线路横断面的原理，介绍了利用全站仪测设线路横断面的方法及步骤，实现了线路横断面测设的快速进行，为一体化作业打下了基础。

The relations of parametric equations with the route coordinates and the part coordinates are found out according to the curve model,the parametric equations of middle and side stakes in circular curve and easement curve are derived,thence the value of parameters is obtained,the solution procedure is got.

根据曲线模型，找出线路控制坐标系与局部坐标系坐标之间的参数方程关系，推出了缓和曲线及圆曲线中边桩坐标的参数方程，代入已知量求得参数的值，给出了求解步骤。

This paper establishes cubic spline function, analyzes subsection curve function and curve slope and curvature, at last decides to place the curve especial points which can be obtain easement curve length and other line parameters, such as the ZH point (end of line and beginning of transition curve), the HY point (end of transition curve and beginning of circular curve), the QZ point, the YH point (end of circular curve and beginning of transition curve), the HZ point (end of transition curve and beginning of line).

针对公路平面线形的8种组合类型，其线形元素特征则由最基本的直线、圆曲线、缓和曲线组成的特点，解析三次样条函数模型，得分段曲线函数、曲线斜率、曲率，从而确定曲线特征点（直缓ZH点、缓圆HY点、曲中QZ点、圆缓YH点、缓直HZ点）位置，进而得到曲线缓和曲线长度及其他线形参数。

Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.

在对危险的南部地区访问时，他斥责什叶派民兵领导人对中央集权的挑衅行为。

In fact,I've got him on the satellite mobile right now.

实际上 我们已接通卫星可视电话了