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A novel design scheme for digital optical switch with high extinction ratio by employing S curve waveguide at the end of the Y branch ii proposed. Higher extinction ratio then that of the device without S curve waveguide is obtained by applying certain synchronous voltage to tie Y branch and the curve electrode of tie S curve waveguide.

文章提出一种关于非对称电极低串扰数字光开关的新型设计方案,在Y分叉后端引入S弯曲波导,通过在Y分叉处的非对称电极和弯曲波导的弯曲电极处施加一定的同步电压,实现了比没有S弯曲的开关更低的串扰。

The resulting linear system, the coefficient matrix of which is, typically, a 2 x 2 block symmetric or non-symmetric and singular or non-singular indefinite matrix, is of high order and ill conditioned. In order to solve such system we have to use iterative methods with fast convergence speed.

所得的离散方程组(其系数矩阵典型地是 2 x 2 块对称或非对称,奇异或非奇异的不定矩阵)是高阶和病态的,为了求解这样的方程组我们必需使用快速收敛的迭代方法。

In the full-scale aero-elastic model test, it is observed that there exist more than one interval of poor aerodynamic performance, and the non-symmetric erection sequence, while increasing the aerodynamic stability at the very places where aerodynamic performance of symmetric erection sequence is poor, performs worse in some other intervals with a vertical flutter phenomenon.

在全桥气弹模型的风洞试验中发现,采用对称架梁施工方法,在施工过程中会存在颤振稳定性最差的区间,并且这样的区间可能不止一个,而采用非对称架梁施工方法,固然在那些采用对称架梁施工时颤振稳定性较差的区间处提高了颤振稳定性能,但却在另一些施工区间中表现出比对称架梁施工更差的颤振稳定性能。

A plausible charge distribution of Fe and Mo valence states is proposed, and the stability of the compounds is discussed. Polycrystalline samples of 〓(0.8≤x≤1. 5) are prepared by solid-state reaction at high temperature. The alteration of the relative content between Fe and Mo in 〓 exhibits a significant effect on the crystal structure and the ionic ordering of the compounds.

采用传统高温固相烧结反应法合成了非化学配比的双钙钛矿型〓系列化合物。X射线粉末衍射数据分析结果表明,非化学配比的双钙钛矿结构〓(0.8≤x≤1.5)系列化合物的晶体结构随着Fe含量x的变化在x=1.2附近有一个由四方14/mmm对称向立方Fm〓m对称的结构结构相变发生。

The conventional calculation models of electron displacement polarizability are summarized and their limitations are revealed.

分析了经典的电子位移极化率的计算模型,指出了这些经典模型在计算非对称双原子分子模型时存在局限性,提出了一种针对非对称双原子分子的电子位移极化率的计算模型。

In Chapter 3, we discuss the synchronization of coupled dynamical systems on condition that the external coupling matrices are n × n irreducible symmetric real matrices with zero row sum and nonnegative off-diagonal elements and internal coupling matrices are m × m asymmetric matrices.

在第三章我们讨论了耦合动力系统中,当外部耦合矩阵是n×n阶实对称不可约,行和为零且对角线以外的元素非负的矩阵,内部耦合矩阵是m×m阶非对称矩阵时耦合系统的同步问题。

As mentioned above, this dissertation can be divided into two parts. One is devoted to study the high resolution ro-vibrational spectra of some asymmetry top molecules, such as D〓O and DOCl. Another is about studying anharmonic force field and vibrational intensities of some symmetry top molecules by quantum chemistry method, such as SiHCl〓 and AsH〓.

因此本论文的工作以此为脉络分为两个部分,第一部分以D〓O和DOCl分子为体系,研究非对称陀螺分子的高分辨振转光谱;第二部分以对称陀螺SiHCl〓和AsH〓分子为体系,用量子化学计算的方法研究了小分子的非谐性力场和振动光谱强度。

Based on the wave equation in the acoustic fluid space and the theory of thin-wall structure, the uncoupling error in low frequency range about the nonsymmetrical coupled structure-acoustic analysis equation is studied.

该对称模型特征值的非负性及特征问题的可降阶性也在本文中进行了深入研究,同时指出了在复模态分析中应当注意的问题;(2)由声空间波动方程和薄板理论出发,对非对称声振耦合方程的低频解耦误差问题进行了研究。

Simulation results of symmetric QPSK/8PSK modulated signals show that increasing the number of states of the coder will improve the coding gain in comparison with uncoded one.

结果表明:在对称调制信号上,调制方式分别为4PSK和8PSK模式,编码器状态数增加相对于未编码时的BPSK和QPSK编码增益可以得到提高;非对称调制信号集相对于对称调制信号集可进一步改善编码增益。

Fish-bellied cable truss of point supported glazing has been widely used for the characters of lightness and transparency. And commonly it is systematically supported, when additional support is added, the structure is turned from symmetrical support into unsymmetrical support, the mechanical performance will be changed greatly because of its weak ability to resist unsymmetrical deformation, and more discussion will be needed.

点支式玻璃幕墙鱼腹式索桁架结构由于其轻盈、通透的特点得到了广泛的应用,其一般都是对称支承布置,当结构由对称支承变为非对称支承时,由于其抵抗不对称变形的能力较弱,结构的力学性能会发生较大的改变,需要作进一步的探讨。

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However, as the name(read-only memory)implies, CD disks cannot be written onorchanged in any way.

然而,正如其名字所指出的那样,CD盘不能写,也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口,替代木托盘,免薰蒸,符合欧盟、北美各国对出口货物包装材料的法令要求;喷涂钢托盘适用于重载上货架之用,托盘表面根据需要制作成平板状、波纹状及间隔形式,满足不同的使用要求。

A single payment file can be uploaded from an ERP system to effect all pan-China RMB payments and overseas payments in all currencies.

付款指令文件可从您的 ERP 系统上传到我们的电子银行系统来只是国内及对海外各种币种付款。