椭圆度

AccuRoll轧管机孔型椭圆度系数的计算

Calculation of groove ovality factor of ACCU-ROLL pipe mill

从空间解析几何的角度，分析了AccuRoll轧管机孔型椭圆度的变化规律。

The law governing the change of the Accu-roll pipe mill groove ovality is analyzed from the point of view of space geometry .

根据导出的方程组，进一步开发了可适用于任意椭圆度的椭圆波导FEM放大器三维非线性数值模拟程序。

Based on these equations , simulation program suitable for elliptical waveguide FEM amplifier is developed .

具有椭圆度误差和棱圆度误差的工件外圆在V形块上定位的误差分析

An Error Analysis of the Work Cylinder with Errors in Ellipticity and Prismatic Roundness when Located on a V-block

利用Fraunhofer全息图的再现实像测量孔的椭圆度

Using the Reconstructed Real Image of the Hologram to Measure the Deep Hole Ellipticity

作者采用这种方法，对大椭圆度的球形马克（Spheromak）中的倾斜模（TiltingMode）不稳定性进行了研究。

An application is made to the problem of the tilting mode instability for spheromak without restriction in ellipticity .

分析了螺旋焊管生产中椭圆度产生的原因，介绍了GB/T9711.11997、GB/T9711.21999和APISPEC5L标准对螺旋焊管管端椭圆度的不同规定。

The article analyzes the causes of roundness in welded pipe production , also introduces the different requirements on roundness of GB / T9711.1 1997 、 GB / T9711.2 1999 and API SPEC 5L .

在分析电测曲线形态的基础上，提出了利用饱满系数（RAD）、椭圆度（RAT）等曲线形态量化参数自动识别低阻油层的方法，取得了令人满意的应用效果。

Based on analysis on electric logging curve , it is proposed to identify low-resistivity layer with curve-quantified parameters , such as RAD and RAT , and this method has satisfied effect .

理论分析发现，截面椭圆度e、节距S以及冷凝液表面张力系数σ均会影响螺旋形变管冷凝传热性能，但e为主要影响因素。

The theoretical analysis found that the ellipticity e , spiral pitch S and surface tension factor σ of the condensate could influence the condensation heat transfer performance of the SDT , and ellipticity was the main influencing factor .

阐述了链轮齿数、链轮椭圆度与链传动中心距对瞬时传动比的影响，并在AutoCAD上显示、输出了相应的变化曲线。

The effects of number of teeth , ovality of sprocket and central distance of chain drive on instantaneous ratio was also expounded , and the varying curves were shown and exported using AutoCAD .

并针对瑞士SIM公司TPO150（国产S1240B）型活塞外形车床讨论了其椭圆度仿形加工的控制问题，提出了一项改进措施。

The control of elliptical mechanisms of the TPO-150 ( model S_1-240 B in China ) piston finishing lathe is discussed and one improvement proposal is suggested .

对测量原理和误差进行了分析，指出在顶角为60°的V型座测量椭圆度较小的圆柱工件时，随机一次测量结果即可视为其平均直径，测量误差已可忽略。

Particularly , when a cylindrical workpiece with less ellipticity is measured once on a V-shape slot with a slot-angle of 60 degree , the random measuring result may soon be regarded as its mean dia-meter and its errors may also be ignored .

UOE焊管成形质量控制的最终目的是使板料经过多步工序成形焊管的椭圆度和桃形凸度达到精度要求。

The goal of quality control of the UOE forming process is that ellipticity and convex amount of pipe reach given precision .

室内静态和动态试验表明，装置分析处理软件能够适应一次检测油管2000m，最大椭圆度检测平均相对误差为127%。

Static and dynamic tests show that , the apparatus can be used to deal with 2000m coiled tubing once , with a mean relative error of 1 27 % in testing the maximum ellipticity .

通过做实验，结果表明在金刚石扫描参数中透光度的值对TTI值影响最大；其次是椭圆度。

The result showed that , of the scanning parameters , the transparency is the first influencing factor to the TTI value of the diamond , and the elliptical shape factor is the second .

结果表明，小于0.01的椭圆度偏差对成像重建带来的影响可以忽略。与传统的Monte-Carlo方法相比，解析建模方法在速度上有较大的优势，且能够方便地推广到其他编码成像系统中。

A semi-quantitative result shows that the effect on imaging quality can be omitted when the ellipticity error is less than 0.01.Compared with the Monte-Carlo method , the analytic model is more effective in computation and easy to apply to other similar code imaging systems .

小椭圆度圆波导的交叉极化效应

Cross Polarization Effect of the Circular Waveguide with a Small Ellipse

设计小椭圆度的圆波导移相器的新方法

A new method for designing circular waveguide phaser with small ellipticity

钢管张力减径孔型椭圆度的设计

The design of ellipticity of tension reduce pass for steel pipe

非均匀平面波声场中质点运动的椭圆度

Ellipticity of Motion for Particle in Field of Inhomogeneous Plane Wave

筒体椭圆度对外压失稳临界压力的影响分析

Affect Analysis on Buckling Critical Pressure for Different Non-circular Section Factor

用有限元法分析石油套管的椭圆度对承载能力的影响

FE Analysis of Influence by Oil Casing Ovality on Its Extrusion Strength

椭圆度仅对均匀外挤压力导致套管破坏有较大影响。

The ellipticity only influences casing damage caused by outer extruding force .

椭圆度对井眼拉伸和挤毁破坏的影响

Effects of Ellipticity on the Tensile and Collapse Failure of a Borehole

中子半影成像中椭圆度误差的解析计算

Analytic calculation of ellipticity error effect in neutron penumbral imaging

活塞外侧形状的椭圆度柱塞式纺丝机的设计

The Ellipticity of Piston Profile DESIGN OF PLUNGER SPINNER

热镀锌钢丝椭圆度的质量控制

Quality Control of Ellipticity of Hot Galvanizing Steel Wire

连续油管椭圆度在线磁性检测原理与方法

The magnetic principle and method of on-line testing of ovality of coiled tubing

纵向型线特征以及椭圆度变化特征采用三次样条进行拟合。

The middle convex and varied ellipse characteristics are fitted by cubic spline .

本程序主要是为了测量圆形小工件物体的椭圆度。

This program is mainly to measure the small circular piece object ellipticity .