螺旋线

DNA双螺旋线，RNA（译注：核糖核酸，下同）的二级结构和蛋白质折叠基元；

DNA double helix , secondary structure of RNA , and elements of protein folding ;

基于EXCEL的滚刀螺旋线误差检测方法

Detection Method of Hob Helix Error Curve Based on Excel

展望了螺旋线行波管CAD技术的发展前景，对我国如何自主开发螺旋线行波管三维CAD软件提出了一些建议。

Our insight into future of 3D helix TWTs CAD of China is given .

带形状参数三角多项式均匀B样条曲线可以精确表示圆，椭圆，螺旋线。

The circle , ellipse and helices can be represented with trigonometric polynomial uniform B spline curves with shape parameter .

AutoCAD基于螺旋线的三维实体造型

Helix - based Three - dimensional Solid Modeling of AutoCAD

利用二次开发功能为AutoCAD扩充绘制三维螺旋线命令

Command of 3D Helix for AutoCAD by Using Secondary Development of AutoCAD

V形杆夹持、翼片加载的螺旋线但波结构很适合于宽频带行波管应用。

A vane-loaded helix slow wave structure supported by V-type rods is suitable for broadband traveling wave tubes .

NURBS曲面无退刀双螺旋线轨迹规划法

Non-retraction Double Spiral Tool-path Planning for a NURBS Surface

一种基于CPLD的丝杠螺旋线误差动态检测方法

Research on High Precision Dynamic Detecting System of Screw Shaft Helical Line Error Based on CPLD

根据Holmes理论公式，研制出阿基米德螺旋线凹槽模具。

According to Holmes equation , Archimedes helix slot mold was manufactured .

空间圆柱螺旋线的NURBS表示

Representing the cylindrical helix with NURBS curves

CATIA在混凝土搅拌罐螺旋线设计中的应用

The Application of CATIA in Concrete-Mixer Drum Helical Curve

本文采用多导体传输线方法，分析N头螺旋线慢波系统的高频特性。导出了色散方程和耦合阻抗方程。

F. characteristics of N end helices slow-wave system have been analysed by using method of multi-conductor transmission line , the chromatic dispersion equation and coupling impedance equation have been derived .

利用浇口可以更换的阿基米德螺旋线模具，研究了HDPE塑料的螺旋线流动长度（简称螺旋线长度）和浇口直径的关系。

Using Achimedean spiral mold with changable gate , the relationship between gate diameter and spiral lengths of HDPE was studied .

脉冲MPM小型化行波管螺旋线慢波结构的设计和改进

Design and Improvement of the Slow Wave Structure in the Mini-TWTs for MPMs

对目前主流的部分螺旋线行波管三维CAD软件（MICHELLE、COCA、CTLSS、CHRISTINE等）进行了简单介绍。

Some representative 3D helix TWTs codes are briefly introduced , such as MICHELLE , COCA , CLTSS and CHRISTINE .

介绍了一种使用多通道高速线阵列CCD传感器来测量标有单螺旋线标志的火箭初始弹姿的系统方法。

A measuring technique of initial state for the rocket based on linear CCD is introduced in this paper , which has multi-channel linear CCD as its sensor .

介绍了用AutoCAD2000中的VISUALLISP开发工具开发三维圆柱螺旋线的方法，给出了开发程序代码和运行结果，同时叙述了画三维两端并紧磨平的圆柱压缩弹簧的方法。

Introduces the method drawing 3D cylindrical helix and cylindrical compression spring with the Visual LISP language in AutoCAD 2000 , and gives the program as well as the result .

应用Pro/Engineer、microsoftexcel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。

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 .

运用HFSS软件对实验中两个被测的螺旋线慢波结构进行建模，分别计算了它们的色散和耦合阻抗特性，在模拟中考虑了空间谐波对耦合阻抗的影响。

Also the dispersion and interaction impedance of them are simulated by HFSS with space-harmonics effects included and ignored .

本文提出用等效变换法求解内导体为螺旋线的TEM波传输线及其慢波速度，并给出了几种螺旋传输线的电参量。

The TEM wave transmission lines with helical inner conductor and their slow wave velocity are solved by means of the equivalent transformation . Parameters of several helical transmission lines are given .

根据一次近似扰动方程判断，弹性杆的螺旋线状态和圆环状态恒满足Lyapunov稳定性条件。

It is shown that based on the perturbed equations of first approximation , the Lyapunov 's stability conditions are always satisfied for the helical and annular equilibrium states of the rod .

其次，提出了一种基于STL三角网格模型的金属板材数字化渐进成形等残留高度螺旋线轨迹生成方法。

Secondly , a spiral tool path generation method with constant scallop height for sheet metal CNC incremental forming was proposed based on the STL triangular mesh model .

利用基于带有物理基的非笛卡儿张量分析的广义矩阵法，在非正交的螺旋线坐标系中，推导出了连续性方程和Navier－Stokes方程组。

Using the generalized matrix method based on non Cartesian tensor analysis with physical base , the continuity equation and Navier Stokes equations in nonorthogonal helical coordinate system are derived .

在Kirchhoff动力学比拟基础上讨论端部受轴向压力作用的圆截面弹性细杆的螺旋线平衡稳定性问题。

The stability of helical equilibrium of a thin elastic rod with circular cross section under the axial compression is discussed on the basis of the Kirchhoff 's kinetic analogy .

以参数化设计方法为基础，利用UG／GRIP语言编制了混凝土搅拌车拌筒和螺旋线的三维生成程序，给出了理论计算公式、二次开发方法和源程序代码。

Base on the parametric design , use the UG / GRIP language to program for concrete-mixer truck drum and helical curve molding , the expressions and the method of improved developing have been given , the program codes also has been given .

该文提出了一种基于螺旋线的Round-Robin（R-R）crossbar调度算法，在调度级和迭代级分别轮询R-R指针，避免了指针同步；

In this paper , the Round-Robin crossbar scheduling algorithm based on spirality is proposed . It addresses the R-R pointers in scheduling and iteration , respectively , to avoid the synchronic of pointers .

该方法利用SolidWorks软件的相关功能，生成斜齿轮的端面和法面轮廓线，并沿螺旋线扫描获得斜齿轮廓面，最终使用VC++6.0和SolidWorks软件API实现对斜齿轮的三维精确建模。

By using the related functions of solidworks , the transverse and normal profiles of helical gears are generated . The paper also describes how to use API of SolidWorks and VC + + 6.0 to carry out precise 3D modeling of helical gears .

我把身体蓝图概念比喻为Covey的“磨快锯子”和通过“学习，承诺，并且进行”上升螺旋线的连续的更新。

I liken the Body Blueprint concept to Covey 's " Sharpening the Saw " and continuous renewal through the " learn , commit , and do " upward spiral .

介绍了仪器总线技术以及齿轮螺旋线样板校准装置的测量原理，给出了螺旋线样板校准装置的系统结构，阐述了通过GPIB总线和RS-232C串口通讯方式实现运动控制和数据采集的方法。

The instrument bus technology and gear helix master calibration device 's measuring principles are introduced . The frame of the calibration device is provided . And motion control by RS-232C interface communication and the data acquisition through GPIB bus are also described .