Studies on Numerical Solution of Direct and Inverse Scattering Problems from Obstacle and Open Cavity 对障碍物和开腔体正反射问题数值解法的研究
Three-dimensional ( 3D) unsteady compressible flow over an open cavity and the relevant aeroacoustics are studied using a hybrid LES-acoustic analogy method. 使用大涡模拟-声学比拟相结合的方法,研究三维开式空腔的非定常可压缩过流及其相关的气动声学问题。
The open cavity is fixedly connected with handrail support tube and the front-wheel support tubes respectively via screws. 所述开口空腔处分别是通过螺钉与扶手支撑管及前轮支撑管固定连接。
An Improved IPO Method Applied to the Analysis of EM Scattering from a Large Open Ended Cavity 应用改进迭代物理光学方法分析电大尺寸开口腔体散射
High frequency characteristics analysis and experimental study on open input cavity for klystron 速调管输入腔开放腔的高频特性分析与实验研究
Analysis of an Open Cavity with Abrupt Transition by Mode-Matching Technique 利用模匹配技术对突变开放腔的分析
Investigation of open RF cavity by coupling theory 利用场耦合理论研究开放微波谐振腔
Purpose To modify the management of open mastoid cavity and external acoustic meatus. To analysis the principle of improving the surgery quality and to employ in clinical practice more extensively. 目的对开放式乳突术腔与处耳道口的处理方法进行改良,并分析其在提高手术质量中的原理,在临床进一步推广应用。
In range of millimeter wavelength ( such as 8mm), resonant cavity operates in high order mode in gyrotron based on relativistic effect, where mode competition is a very important problem affecting its electrical feature and stability. Open cavity has some action for improving mode competition. 当频率提高到毫米波段(如大气窗口的8mm波段),基于相对论电子效应的回旋管中,工作在高次模式的谐振腔,受到谐振频谱密集及模式竞争现象的严重影响,性能发挥受限。
Modificatory Method of Management for the Open Mastoid cavity and the Opening of External Acoustic Meatus 开放式乳突术腔与外耳道口处理的改良方法
Combined heat transfer of turbulent natural convection and surface radiation in an open cavity 开口空腔内湍流自然对流与表面辐射的耦合传热
This paper develops and studies in detail the diffraction radiation oscillator with a open cavity and a periodic structure through series of cold and thermal measurements by means of a removable dynamic vacuum system. 作者通过一系列的冷测实验和在动态可拆系统上的热测实验详细研究了具有周期结构的开放式谐振腔绕射辐射振荡器。
Reflecting diffraction radiation oscillator with the open cavity of short radius of curvature 短焦距开放式谐振腔,反射式绕射幅射振荡器
Analysis of an open cavity with abrupt changes by S-matrix 具有突变结构开放腔的矩阵分析
The process of development of the cavity including that of separation, open cavity phase, deep closure and jets after closure is shown in figures. The pressure distribution and drag coefficient are also included. 数值计算给出了空泡发展的过程,包括分离、开空泡、深闭合和闭合后的射流,还给出了物面上的压力分布和阻力系数。
Combination of ECFIE with multilevel fast multipole algorithm ( MLFMA) can easily solve electromagnetic scattering from conductive target with open cavity. 均衡混合场积分方程与多层快速多极子方法(MLFMA)结合使用,可以方便地求解含腔导体目标的电磁散射。
A numerical study is carried out for the combined heat transfer of turbulent natural convection and surface radiation in an two-dimensional open square cavity with only one heated wall. 对具有单个加热壁的二维方形开口空腔内的湍流自然对流与表面辐射的耦合传热进行了数值研究。
Analysis of TM Wave Scattering Property by a Two-dimensional Open Cavity Filled with Multilayer Anisotropic Dielectric 二维开口腔体填充多层各向异性介质TM波散射特性分析
Experimental structure and results of a new type of solid-state power combiner with short focal length open cavity are presented in this paper. 本文介绍一种新型短焦距开放腔固态功率合成器的实验结构和实验结果。
The operating characteristics of optically pumped CH3OH FIR lasers have been studied with both open cavity and dielectric waveguide cavity. 对开式腔和波导腔光泵甲醇远红外激光器的运转特性进行了研究。
This paper focuses on drilling and completion technologies in Western Basin of America, and it points out that the essential conditions for open hole cavity completion in the coal bed formation are as follows: high permeability, fragile coal bed rock and high pressure in formation. 介绍了美国西部盆地煤层气井的钻井、完井工艺技术,指出了裸眼造穴适应的条件是高渗透率、煤岩易破碎和储层存在高压。
On the basis of the theoretical analysis, the fiber laser experiment has been performed in the case of two-end open cavity. 在理论分析的基础上,采用所设计消球差耦合系统,在光纤两端开腔的情况下完成了光纤激光器实验研究。
ⅰ sham-operated group only open thoracic cavity and pericardial cavity, ⅱ group and ⅲ group 'animal were MI model. The model was created by liquid nitrogen directly freeze myocardium. Ⅰ组只打开胸腔及心包不造成心肌梗死,Ⅱ、Ⅲ两组用液氮冷冻心尖部建立心肌梗死动物模型。
Teaching students how to open laryngeal cavity in music class 漫谈声乐教学中关于怎样打开喉腔
A nonoverlapping Domain Decomposition Method ( DDM) and edge based finite element method ( FEM) are combined to analyze the electromagnetic ( EM) scattering of a three dimensional open ended cavity with ground plane. 将非重叠区域分裂法(DDM)与矢量有限元法(FEM)相结合对无限大接地的三维开口腔体的电磁(EM)散射问题进行分析。
In a word, for the internal weapon safe separation, open type cavity flow is the most favorable. 开式穴流动弹穴流场较稳定,压力分布较均匀,有利于内埋武器安全平稳地分离。
Die structure with open cavity and slide was determined through process analysis of insulation butt plate with restricted range. 通过对限幅绝缘盖板的工艺分析,确定了开放型腔、滑块脱模的模具结构。
Flow Simulation in Open Cavity by Direct Simulation Monte-Carlo Method 开式空腔流动的蒙特卡罗直接模拟
An artificial neural network ( ANN) based algorithm was proposed to substitute for the traditional calculations used in open resonant cavity method for microwave ceramics measurement, in order to simplify calculations and increase the calculation speed. 针对微波陶瓷的开式腔谐振法算法复杂、计算量大、计算速度慢的问题,提出了一种基于神经网络的替代算法。
But the open cavity is usually long along axial direction because of long tapering section, which limits its use through the combination of the several cavities to enhance gain, bandwidth, output power, and efficiency of Gyrotron. 开放式谐振腔一定程度改善了这些问题,但具有缓变截面波导段的开放腔纵向尺度较大,不易组合运用,难以进一步提高器件的增益带宽积、功率和效率。