1) existing curve
既有曲线
1.
By using the calculating method of distance from points to the center line according to Document[1], a new optimum calculating method has been proposed in this article, which can simply and successfully solve the problem for selection of existing curve elements.
利用文献 [1]给出的中点到中线垂距计算公式及程序 ,提出一种新的优化计算方法 ,能简便而圆满地解决既有曲线要素的选择问题。
2) Adjusting curvilinear railway
整正既有曲线
3) existing railway curve
既有铁路曲线
1.
This paper presents the optimum design principle and method of the existing railway curve realinement.
提出具有线性约束和非线性目标函数的既有铁路曲线整正最优化设计原理和方法,使得铁路曲线整正趋向于更精确、更合理、更科学。
4) reconstruction of existing curves
既有曲线改建
1.
This paper intends to present an analysis of two kinds of simple, rapid, accu- rate and safe location methods of the reconstruction of existing curves :coordi-nate-deflection angle method and traverse-polar coordinate method, both of which are of practical value.
本文探讨了两种简单、快速、精度高且安全性好的既有曲线改建的测设方法:坐标偏角法和导线极坐标法。
6) existing railway line
既有线
1.
The application of cement injection pile in soft soil foundation reinforcement of existing railway line;
粉喷桩加固既有线旁软土地基技术
2.
Construction technology of trans-section continuously welded rail in speed-rising reconstruction of existing railway line;
铁路既有线提速改造跨区间无缝线路施工技术
3.
Design example of existing railway line framed structural bridge of large span
既有线大跨度框构桥设计实例
补充资料：Hesse曲线(代数曲线的)
Hesse曲线(代数曲线的)
Hessian (algebraic curve)
11油限曲线(代数曲线的)【H台自11(.妙如允.抖e);recc咖，T~aaa，即r药pa一吸ee二o‘二p.助蓝] n次代数曲线(司罗玩水c~)的He丈祀曲线就是其极二次曲线能分裂为两条直线的点的集合，也是第一极曲线的二重点构成的集合.n次非奇异曲线的He丈七曲线是一条次数为3伪一2)、类为3(n一2)(3n一7)的曲线.设介O是这条n次曲线的齐次坐标方程，关丘=刁:f/刁xi刁、，则它的He丈犯曲线的定义方程为 !不:关:五，} }五:关:五31=0. }人，人2人3}特征不等于3时的三次非奇异曲线的H既七曲线与这条曲线交于9个通常拐点.因O.H改e(l 844)而得名. A .E.H困阳。B撰
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条