椭圆度也称不圆度，指圆形截面的轧材，如圆钢和圆形钢管的横截面上最大最小直径之差。
此外，键的椭圆度（Ellipticity）为：￡ ＝（入1／入2）一1（入1、入2为键鞍点处电子密度的Hessian矩阵的两个本征值），该值 越大，键越显示出明显的冗键特性；当...
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... outfitting materials 舾装材料 out of roundness 椭圆度 outside diameter (OD) 外径 ...
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The ellipticity is 2.8%, wall thickness reduction is 8.5%. It is arrival the production require basically.
在添加月牙板芯棒时,成形效果得到很大提升,其椭圆度为2.8%,壁厚减薄率为8.5%,已经基本上达到成形要求。
参考来源 - 数值模拟技术在管材推弯成形中的应用All of these settle a analysis foundation for tube-bending three-dimensional finite element numerical simulation.2. Combining computer simulation(finite element analysis),theory analysis with experiment,the paper study on quality forming factors such as orality,thinning rate and springback.
2.采用计算机数值模拟(有限元分析)、理论分析与试验结合的方法,对影响弯管质量的椭圆度、减薄率、回弹量等成形质量因素进行了研究,从仿真角度研究电站锅炉弯管生产工艺过程,预测该工艺的变形,以解决传统弯管工艺成形时弯管凸边管壁受拉减薄、凹边管壁受压增厚而造成的弯管壁厚不均匀现象及模具易损坏等问题。
参考来源 - 电站锅炉弯管成形质量分析及模具改进研究We also design out the ovality instrument, and the instrument has been used very well. The article introduces the measuring principle of shell ovality and deduces the ovality formula for detail.
在论文中,文章对筒体椭圆度的测量原理,计算公式做了详细的介绍与推理。
参考来源 - 基于LabVIEW回转窑筒体椭圆度测量系统·2,447,543篇论文数据，部分数据来源于NoteExpress
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.
针对套管的不同初始椭圆度建立了套管、水泥环、地层平面应变力学模型。
Casing, cement and formation plane strain mechanical model are established, considering casing with initial ovality.
作者采用这种方法，对大椭圆度的球形马克中的倾斜模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 .
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