This paper introduced an optical setup to perform fractional Fourier transformation by Fresnel diffraction with a converging spherical wave illumination.

Modification of the Formulae and the Tenable Conditions of Fraunhofer Diffraction Under Spherical Wave Illumination

球面波照射下夫朗和费衍射公式和成立条件的修正

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Fractional Fourier transformation implemented by Fresnel diffraction with converging spherical wave illumination

会聚球面波照明下由菲涅耳衍射实现分数傅里叶变换

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The images of similar plane wave among Talbot images of spherical wave illumination

球面波照明时的Talbot成像中的类平面波成像

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Optical image encryption using double phase mask based on spherical wave illumination

球面波照射的双随机相位掩模光学图像加密

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Based on the experiment statistics and theoretical analysis, a mechanics model for precision necking of spherical housing of CVJ was established, and the formula of elastic recovery calculation was obtained.

在实验统计和理论分析的基础上建立了钟形壳冷缩径的受力模型，导出了弹性回复量的计算公式，并用有限元法进行了计算。

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Stress gaging analysis of 102c 9% Ni steel spherical holder of Daqing ethene plant

大庆乙烯厂102C9%Ni钢球罐应力测定分析

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The stiffness model of spherical flexure hinge and rotation flexure hinges are developed respectively. The influences of each parameter on the stiffness are analysed based on the model.

分别建立了柔性球铰和单自由度柔性旋转铰的刚度模型，分析了各铰链参数对其刚度的影响，并通过有限元分析了大行程柔性铰链的特点。

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Based on the Castigliano's second theorem, the equations were formulated for the compliance and precision of an elliptical flexure spherical hinge.

基于卡氏第二定理，推导出椭圆型弹性球铰链柔度、精度的解析表达式。

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A new concept of compliance accuracy ratio of flexure spherical hinge was proposed, which was used as the performance index of hinges.

提出弹性球铰链柔度精度比的概念，并以此为性能指标对铰链的设计进行了优化。

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The Developing of Converter Three-point Spherical Hinge Hanging

三点球铰吊挂转炉开发

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In terms of connecting condition of both ends, viscous damper as leaving factory can be made into spherical hinge connections at two ends or at one end.

根据两端的连接条件，粘滞阻尼器在出厂时可以做成两端球铰连接或一端球铰连接，一端法兰连接两种形式。

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To spherical hinge connection at one end, damper of flange connections at one end and the other end supported by flange connections are made into spherical hinge connections.

对于一端球铰连接，一端法兰连接的阻尼器，与法兰连接支撑的另一端也做成球铰连接。

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In this paper, the forming process of the spherical thick wall head hot stamping was simulated with ANSYS using 2-dimensional finite elements.

本文在ANSYS软件上经二次开发后，对带直边半球形厚壁封头的冲压成形过程进行了二维有限元模拟。

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Dipole localization techniques favor MEG due to the higher accuracy of MEG source localization compared to EEG when using the standard spherical head shape model. Study on localization of local epileptiform wave by non-invasive dipole localization method

因此在同样使用标准半球模型情况下，MEG信号偶极子定位方法要比EEG偶极子定位方法优越。局限性痫样波无创性偶极子定位研究

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According to the interlayer contact model of the cylinder, a finite element contact analysis model of the end connecting zone of the spherical head and the cylinder of the integrated multilayer-wrapped high pressure vessel has been established.

在筒体层间间隙接触模型分析的基础上，建立了多层筒体与球形封头连接区有限元分析模型。

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The optimizing analysis of the parameters of joint structure between the spherical head and the tube of the coal-to-liquids heavy duty hydrogenation refined pre-reactor

煤制油加氢预精制反应器封头与简体连接区参数优化分析

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The Stress Analysis of the Edge of the Large Circular Hole on the Spherical Head of the Synthetic Tower of Urea

尿素合成塔球形封头人孔边缘应力分析

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Analysis of Defect Location by UT in the Fillet Weld of Insertion Nozzle on Spherical Head

球形封头插入式接管角焊缝超声波探伤中的缺陷定位分析

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The application scope, working condition and structural design of the sectional spherical head were analyzed and discussed in this article.

本文就无折边球形封头的适用范围、工作环境及结构设计进行分析讨论。

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The Calculation and Intensity Evaluation of Local Stresses on the Spherical Head of Reactor Subject to Inter Pressure

压力容器壳体局部应力计算和强度评定

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