查询词典 electromagnetic

The accelerative GMRES with the fast Fourier transform for solving electromagnetic scattering of three dimensional dielectric bodies is developed.

于是，我们使用结合快速傅立叶变换的GMRES加速技术来计算三维任意形状的介质散射问题。

In Chapter 2, basic theories of acoustic wave and electromagnetic wave are reviewed.

本文从理论分析和实验研究两个方面，讨论了电磁散射特性的声波模拟测量方法。

Based on the upper limb being supposed as a rigid body and the joints being simplified, the relationship between the acromion and the center of the shoulder was measured by the positions of markers which was gotten by electromagnetic tracking system or three-dimensional measurement system based on general cameras.

在对人体上肢进行必要的简化和刚体假设的前提下，用电磁跟踪系统或三维摄像系统跟踪附着于肩峰和上臂上标记点的位置，根据本研究方法便可得到肩峰和肩关节中心的位置关系。

Basing on analysis movement rule of celestial body,the author discuss the cause of earth' s special structure formation and the evolvement law,who cites the theorys of gravitation, electromagnetic force, mightiness and acrotism.

本文在分析天体运动规律的基础上，运用引力、电磁力、强力和弱力等四种基本相互作用力的原理，探讨了地球特殊构造的成因和演化规律。

After countless experiments and years reading about electromagnetic fields, I slowly developed a series of 6 new circuits which I added to the original Lakhovsky circuit.

经过无数次试验和多年阅读有关电磁场，我慢慢地制订了一系列6个新的电路，我说原来的Lakhovsky电路。

A novel direction of arrival and polarization estimation of electromagnetic vector sensors mounted on the airframe is proposed based on biquaternion. The signal processing model for EM-sensor mounted on the airframe is made by biquaternion and then the eigenvalue decomposition of spectral matrix is obtained by means of the EVD of its quaternion adjoint matrix. The memory requirement for data is reduced, and more accurate estimation result is gotten by deducing the stronger orthogonality constraint between the sin- gal and noise subspaces on the field of biquaternion. The performance of the new algorithm is confirmed through numerical examples.

针对机载电磁矢量传感器阵列DOA和极化参数估计问题，提出了一种基于复四元数估计方法，该算法利用四元数建立机载电磁矢量传感器阵列信号处理模型，然后利用四元数联合矩阵的特征分解得到阵列数据相关矩阵的特征分解，一方面使得计算过程中数据的贮存量大大减少，另一方面通过推导得到信号子空间和噪声子空间在四元数域上的正交性从而使DOA和极化参数佑计的精度更高，仿真证实了本算法的有效性。

The preparation of electromagnetic shielding concrete adulterated short carbon fibers and graphite respectively have been introduced in this paper.

介绍了分别掺杂短碳纤维和石墨的电磁屏蔽混凝土的制备，研究了短碳纤维和石墨的含量对混凝土低频电磁屏蔽效能的影响，最后分析了短碳纤维的加入对石墨混凝土电磁屏蔽性能的影响机理，为将来设计高性能低频电磁屏蔽混凝土提供了依据。

The demands of modern technique have a growing pressure for improvement of radome as a protection in front of antenna, which include the aerodynamical qualities, structural requirements of the airframe and excellent electromagnetic characters.

摘要——现代技术对于作为防护层安装在雷达天线前面的雷达罩提出了很高的要求，除机械特性和气动特性以外，还必须具有良好的电气性能。

The calculated results were compared with the experimental results, and the agreements could be obtained. The effects of magnitude and distribution of the electromagnetic force on the flow around the aerofoil were investigated.

灿toke方程中考虑了可以控制电磁力大小和分布的电磁力源项，并把计算结果与实验测量结果进行了比较，发现两者符合较好。

Boundary flow around an aerofoil controlled by streamwise electromagnetic force was simulated numerically at the low Reynolds number.

在低Re数条件下，对流向电磁体积力影响翼型体表面边界层流动过程进行了数值模拟。

This paper designs the communication system of radio telescope FAST.

针对500m口径球面射电望远镜FAST分布式控制系统的特点完成了其通信系统的设计。

Political sheep's step-by-step a large number of fossils unearthed in the county soil Ma Ali after rural village in the middle of sallow pelitic siltstone.

步氏和政羊化石大量出土于广河县阿力麻土乡后山村，产于灰黄色泥质粉砂岩中。