矩形波

Thus, we can apply the very algorithm to make their numerical analysis much quickly and precisely. We will take the following two devices, the multiple branch rectangular waveguide directional coupler and the H-plane T-junction duplexer, as examples, systematically analyze and discuss the "Network segment and de-segment algorithm" presented and GA application in the computer aided design of complex microwave structures.

本论文将以矩形波导分支电桥耦合器和H面T型接头双工器的优化设计为例，比较系统地分析讨论将&多模网络分解—重组算法&和遗传算法应用于微波电路器件CAD的理论、算法和计算技术问题，并给出主要的器件性能特性曲线，以全面报告我们研究工作的心得体会和研究成果。

The influence of two parameters, frequency and pulse width ratio of wave pulse brush plating speed about, is studied on the base of experiment in this paper.

在低频范围内，通过试验研究了矩形波脉冲频率 f，脉冲宽度比 B对刷镀速度的影响规律。

ABSTRACT The theory and algorithm of the arbitrary three-dimensional discontinuities in rectangular waveguides is developed.

本文研究矩形波导内任意三维不连续性分析的理论和算法。

The channel currents appear quantal in nature, transiting in a seemingly random manner between the"open"and the "closed", and have the characteristic of"all"or"none".

单通道电流信号具有&定量&特性，表现出&全有&和&全无&的特征，为一个个电流幅值高度恒定，持续时间宽度随机变化的矩形波，类似于随机电报信号。

Basic characteristics of cosine transform spectrum were analyzed, where contour lines of 2D cosine transform of point mass present the shape of a quarter of concentric circles and the number of counter become small along with the increasing of wave numbers. The spectrum of vertical rectangularcylinder put up periodic zero counters which mark off quadrate areas, the values of counter in each areas alternately change between the plus and the minus, and with the increasing of wave number, the values of counter present attenuation character alike e exponent.

分析了点质量和直立矩形柱体重力异常余弦变换谱的基本特征：点质量二维余弦变换谱等值线呈1/4同心圆形状，等值线随着波数的增大而变稀；直立矩形柱体谱出现了周期性变化的零等值线，该等值线将非零等值线划分为a×b个矩形区域，而且等值线值在各矩形型区域中正负交替变化，随着波数的增大，不同的矩型域中等值线值呈e指数衰减特征。

Based on our formula of width equivalence of SIW and RW, the formula of length equivalence of SIW and RW has been derived, which is expected to find wide applications in the engineering design of SIW filter and resonance cavity.

根据已知的SIW和RW之间的宽度等效公式，通过对传播常数的分析，推导出SIW和等效的矩形波导之间的长度等效公式，这个公式在计算SIW短路结构和谐振腔时很实用。

We have designed a LCMFG to compensate dispersions for eight channels at the same time.

第五章研究折射率调制类型为矩形波的长周期光纤光栅。

Temperature effect on a rectangular resonant cavity is studied, and temperature characters of bi-metals are discussed.

本文讨论了温度对矩形波导谐振腔谐振频率的影响，以及热双金属材料的特性。

The finite element method is applied to analyze a prototype square wave permanent magnet motors using in electric vehicles.

基于有限元法，分别采用麦克斯韦应力法和虚位移法对电动车用轮毂式矩形波永磁同步电动机的电磁转矩进行了数值计算。

Star testing card ; rectangular testing card ; microdensitometer ; screen-film system MTF

星形测试卡；矩形波测试卡；显微密度计；屏-片系统； MTF

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。