螺线

乔伯斯被APPLE公司慢耗损的螺线所吸引，他甚至为这家他帮助创立的电脑公付出了较大的努力。

Jobs arrested Apple 's slow death spiral and even put some oomph back into the pioneering computer firm he helped found .

对全回转拖轮进行了典型操纵试验的仿真，包括：螺线试验、Z形试验以及回转试验。

This thesis carries out typical tests , including spiral test , zigzag test and turning test .

利用MATLAB数值求解了密绕平面螺线外的磁场分布，所得结论对于工程上径向导引磁场的设计具有重要的参考价值。

The numeric solutions on magnetic field of plane helix was solved by MATLAB , it helps to design radial guiding magnetic in engineering .

为了用控制多边形的方法表示阿基米德螺线，本文构造了拟Bernstein基。

In order to represent Archimedes helix with control polygon , we construct Bernstein-like basis .

Archimedes螺线盘转动问题的差分处理

A difference method for solving the turning problem of the Archimedes helices plate

三维Minkowski空间中一般螺线的几何性质

The Geometric Properties of Cylindrical Helix in Minkowski 3-space

关于圆柱螺线性质的一些探讨ENUM顶级域问题浅论

Properties of Cylindrical Spirals Discussion on TLD of ENUM

通过分析等速螺线的形成机理，建立了相应的数字积分DDA插补算法。

After analysing uniform speed spiral forming mechanism , This paper builds a proper digital integration interpolating algorithm .

这些周期轨与R-不变平面Fix（R）的交线是一些螺线段，而2-同宿轨线则对应于这些螺线段的一个或者两个端点。

The intersections of those 2-periodic orbits with Fix ( R ) are spiral segments , while one or two ends of them are the intersections of 2-homoclinic orbits with Fix ( R ) .

基于Pythagorean速端螺线的平稳加工路径

Pythagorean Hodograph Spiral Based Gentle Tool Path

最后，根据感应电动势的原理，通过增加感应线圈元的数量进一步得到了n个有限长多层螺线圈元串联顺接电感的计算公式。

Finally , based on the principles of the induced electromotive force , increase the number of induction coil element in order to get n finite-length multi-layer solenoid coil inductance element in series , linking and reverse the formula .

本文详细分析了不对称Johann型单色器和不对称对数螺线型单色器的衍射几何。

The diffraction geometries of asymmetric Johann crystal monochromator and asymmetric logarithmic-spiral crystal monochromator are analysed in detail .

说明了圆柱螺线是Bertrand曲线，同时曲率和挠率都是常数的空间曲线一定是圆柱螺线。

It shows that cylindrical spirals are Bertrand curves and a space curve with constant curvature and torsion is a cylindrical spiral .

介绍在国内首次自行设计和研制成功的、采用内管壁螺线电极技术的新型无电极（Electrodeless）静电聚焦象管（ELI）。

This paper presents a new type of the " Electrodeless " Electrostatic Focussing Image Tube ( ELI ) originally designed and fabricated in China .

提出铲齿成形铣刀齿背曲线的最佳线形应是对数螺线，而后运用AutoCAD的内嵌编程语言VBA，实现了对数螺线齿背曲线的自动生成。

The best profile for tooth back of the relieving shaped milling cutter is firstly presented in theory . The automatic generation of logarithmic spiral is achieved by means of the language of VBA embedded in AutoCAD .

螺线的Steinhaus维数

Steinhaus Dimension of Spirals

介绍了五次PH螺线的构造，并将其应用于高速公路过渡设计中，展示了应用五次PH螺线进行直线到圆的过渡，圆到圆的C形过渡的实例。

The construction of Pythagorean hodograph quintic spirals is introduced . Its use for the various transitions encountered in highway design is analyzed . Practical examples of highway design , namely , straight line to circle , circle to circle with C transition , using quintic PH spirals are illustrated .

介绍了Ekman螺线的动力学结构，分析研究了风应力及海水内部的动量传递形式。

In this paper , the dynamical structure of Ekman helical line is introduced , and the wind stress and the form of momentum transfer in sea are analyzed .

一对G1拼接的圆柱螺线段可插值空间两端点位矢和单位切矢，且可适应不同的设计要求，如逼近在双圆柱螺线段两端点处的主法矢，使曲线光顺等。

A pair of cylindrical helix splines which are G1-jointed can interpolate two given end-points and their tangents , and fit several needs of design , such as to approximate two end-points normal directions of the double cylindrical helix segment , to smooth resulting curves , etc.

在三维欧氏空间中，作为特殊曲线，Mannheim曲线、Bertrand曲线以及一般螺线具有良好的几何和代数性质.讨论了三维欧氏空间中特殊曲线的主法线曲面。

Discusses algebraically and geometrically the properties of the ruled surfaces in the Euclidean three-space , especially , the principal normal surfaces on which there are some special curves , such as Mannheim curves , Bertrand curves and general helices .

对数螺线及其在机械工程领域中的应用

Logarithmic spiral and its application in the field of mechanical engineering

神赐比率与对数螺线、著名级数之间的奥秘

The Mystery between the well-known Golden Section Rate and Logarithmic Helix

斩拌机等角螺线刃型切刀切割特性的研究

Study on Cutting Properties of Logarithmic Helix Cutter of Silent Cutter

在打开螺线阀之前，先将水倒入管中。

Water is poured into the pipe before opening the solenoid .

可供螺线天线设计参考。

The renge of the angle may provide the antenna design .

端面螺线滚珠式止动器设计

The design of the dog driver with end helical and ball

双圆弧与双螺线拟合及其应用

Double Circular and Double Helix & Their Approach and Application

对数螺线、黄金分割与斐波那契数列的完美统一

The Perfect Unity of Logarithmic Spiral , Golden Section and Fibonacci Sequence

对数螺线自锁器的设计计算

Design and calculation for self locking gear of logarithmic spiral

中心螺线圈式大面积均匀金属等离子体形成方法

Method to form large area uniform metal plasmas based on central solenoid