spiral curve

We have obtained fast generation algorithms for ellipse, parabola, hyperbola, Archimedes spiral, logarithmic spiral, and probability curve arcs with increments and properly-chosen parameter equations.

本文采用增量法，选取适当的参数方程，得到了椭园（包括园）、抛物线、双曲线、阿基米德螺线、对数螺线以及概率曲线弧的快速生成算法。

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As the research indicates, the structural parameters of the spiral curve slow-wave systems have complicated influence on its fundamental wave dispersion characteristics and coupling impedance.

研究结果表明，螺旋线慢波系统的结构参数对它的基波色散特性和耦合阻抗影响非常复杂。

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Experiment and Research on Machinability of Relieving Shaped Milling Cutter with Logarithmic Spiral Back Curve

对数螺线铲齿成形铣刀切削性能试验

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The paper utilizes the non-linear dynamic theory of rolling stock running on the curved-track to research the safety and stability when the rolling stock running on the track overlapped elevation curve on the spiral curve.

用机车车辆曲线通过非线性动态理论，研究竖曲线与平面缓和曲线重叠对机车车辆曲线通过时的安全性和平稳性的影响。

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The radiation spectrum for relativistic electron moving along curved spiral curve in plasmas is calculated, and also the formula of total energy emitted by a relativistic electron in vacua is derived.

从运动荷电粒子产生的流出发，导出相对论电子和相对论电子集在等离子体及真空情况下曲率辐射的能量谱及辐射总能量，分析了等离子体对辐射的影响。

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The cubic spiral curve was used to smooth the collision-free path that the robot can track easily.

利用立方螺旋曲线对路径进行光滑处理，处理后的无碰撞路径可以容易地被非完整移动机器人进行跟踪。

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Rhythm of the spiral curve dominates the screen, whether the earth, the sky and trees are to the person presents a stunning dynamic vitality. "The cornfield in the autumn love" expressed the pursuit of life warm and strong desire to a firm.

曲线螺旋的律动支配着画面，不论是大地、天空和大树都给人呈现出一种令人炫目的动感活力。《麦田的秋恋》表达了对生活的热烈渴望和顽强坚定的追求。

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The spiral curve structure can be used in slow-wave systems.

螺旋线结构就可以作为慢波系统；

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The charting and application of spiral curve figure of exposure for industrial X-ray radiogram

工业X射线机螺旋型曝光曲线表制作与应用

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In the course of surveying urban bridge spiral curve structure sideline location, when a station can not be set up in ZH spot, nor is only CS SC in spiral curve designed, method of defection angle can not be used in ZH spot.

在城市桥梁缓和曲线段构造边线测设中，不能设站于ZH点，或设计只有缓和曲线YH-HY段的情况都不能于ZH点用偏角法等方法放样。

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Equations of nth Spiral Curve Parallels and Analysis of its Properties

n次回旋线的平行线方程及其特性分析

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This paper discusses the bifilar splitting phenomenon of magnetic focusing spiral curve.

文中对磁聚焦螺线的双线分裂现象进行了讨论。

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According to the differential geometry theory and counter-analysis principle, this paper deduces the spiral curve arc-length base equation of higher degree from its total construction.

根据微分几何理论，按反分析原理，从缓和曲线的整体结构关系中推证了缓和曲线弧长基础方程的形式。

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Research of Safety and Stability of Train Running on the Track Overlapped Elevation Curve on Spiral Curve

列车通过坚平曲线重叠线路时的安全性和平稳性研究

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The problems of the screw were found out through spiral curve fitting and motion simulation analysis.

通过对螺旋槽曲线的拟合及运动仿真分析，找出了螺杆存在的问题，提出了改进措施。

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Looking at picture of India-European relations" ups and downs," but the two sides eventually spiral curve found in the realistic position – comprehensive strategic partnership.

综观印欧关系全貌起伏跌宕，但双方最终在螺旋式上升的曲线中找到了合乎现实的定位&全面战略伙伴关系。

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A Method of the Middle Spiral Curve Joining in Road Complex Curve

公路复曲线的中插缓和曲线连接的一种方法

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Research on characters and calculation of arc length about parallel sidelines of spiral curve

缓和曲线的平行边线的性质及弧长计算研究

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The wind speed basically followed empirical Ekman spiral curve with height distribution. These results could find their application in Sichuan basin universally.

风速随高度分布基本遵循经验爱克曼螺线，这一经验公式可在四川盆地内推广应用。

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Setting-out Surveying of Urban Bridge Spiral Curve CS-SC

城市桥梁缓和曲线YH-HY段的测设

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Study on the Algorithm of Setting Point Near the Railway Spiral Curve

缓和曲线投点算法研究

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Coordinate Calculation of the Middle Spiral Curve for High Ways

高等级公路中插缓和曲线的点位坐标计算

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By using software of Pro/ Engineer, Microsoft Excel and so on, the volume of the drum is computed accurately, and the blade spiral curve is plated easily.

应用Pro/Engineer、microsoft excel等软件计算罐体容积、绘制搅拌筒叶片螺旋线，降低计算强度，提高了设计准确性。

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The frequency width of the fundamental wave depends primarily on the inner diameter of the spiral curve, and with the inner diameter fixed, the phase velocity of the fundamental wave can be adjusted by changing the spiral pitch.

基波的频带宽度主要决定于螺旋线的内径，在内径确定的情况下，可以通过改变螺距对基波的相速度大小进行调节；

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With different structural parameters, the coupling impedance curve decays with frequency in different rates, and there are optimum values of spiral curve thickness among other parameters for the coupling impedance to be maximum.

结构参数不同时，耦合阻抗曲线随频率的衰减快慢有所不同，螺旋线厚度等参数存在一个使耦合阻抗最大的最佳值；

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A Quick Solution to a Nonlinear Equation of Spiral Curve

缓和曲线非线性方程的快速解算

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In addition, research was made on 6 types of arch configuration such as three center circle, logarithm spiral curve, parabola, hyperbola, ellipse and the general quadratic curve.

本文分别对三心圆、对数螺旋线、抛物线、双曲线、椭圆和一般二次曲线六种体型进行了研究。

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