波导

This type of the modulator is easily fabricated and can be operated at more than 40 GHz bandwidth.

讨论了电极间隙宽度和导波层吸收对器件性能的影响。

The guided wave group velocity was calculated according to the experiment result, and the location of damage was estimated with the group velocity and time of flight.

通过对实验结果的处理分析，计算出导波的群速度，并根据群速度和飞行时间得到了损伤的位置信息。

In this paper, we theoretically investigated the properties of electromagnetic waves propagating in gyromagnetic waveguides with a plane interface, and the spatio-temporal characteristics of nonlinear waves in gyromagnetic materials.

我们主要在理论上研究了单界面的非线性旋磁导波系统中电磁表面波的传播特性，以及非线性电磁波的时间空间传播特性。

A series of theoretical and experimental studies on the microstrip patch antennas with dielectric superstrates is carried out systematically. Firstly, a comprehensive survey of the microstrip antenna technology and its theories are presented. Then, two analysis techniques, named as the spectral domain Green's function method and the spectral domain integral equation method are developed. The SDGF method is a simplified analysis technique, which takes advantage of the spectral domain immittance approach to find the dyadic Green's function for the stratified media, and obtains the complete closed-form formulas for radiation patterns, directivity, efficiency, gain etc. Some interesting calculated results are presented. The SDIE method is capable of determining resonant frequency, radiation characteristics, input impedance etc, for the covered microstrip patch antennas. Comparing with other full-wave analyses it reduced computation and mathematical labour remarkably. The singularities near the pole location of the surface-wave modes and the difficulty of the integral computation over infinite range of oscillating integrands are dealt with actively and documented well. Results predicted by the SDIE method agree extremely well with our experimental results for resonant frequencies of various superstrates. The superstrate effects on impedance and radiation characteristics also have been investigated experimentally so that the gap due to lack of measured data and computed results for multi-layered superstrate has been filled to some degrees and two useful observations have been achieved for weakening the resonant frequency shift and optimizing the microstrip antenna gain. As a meaningful application, the design and analysis of a 4×4 patch array are introduced.

实用微带天线普遍加介质覆盖层来防护热，物理损伤和环境影响，也可能在飞行或严酷气候条件下自然形成覆盖层本论文对带介质覆盖层的微带贴片天线系统地作了一系列理论和实验研究首先，对微带天线技术和理论作了全面的综述然后，发展了两种分析方法，称为谱域格林函数法和谱域积分方程法SDGF法是一种简化的分析技术，它利用谱域导抗法来求得分层媒质的并矢格林函数，并得出方向图、方向性系数、增益等参数的完整的闭式公式，给出了一些令人感兴趣的计算结果SDIE法能确定介质覆盖微带天线的谐振频率、辐射特性和输入阻抗等与其它全波分析方法相比，它明显减小了计算量和数学工作量已有效地处理了表面波模极点附近的奇异性和对振荡的被积函数的无限区间积分计算的困难对于不同覆盖层情况下的谐振频率，由SDIE法所预示的结果与我们的实验结果吻合得很好对于覆盖层对阻抗和辐射特性的影响也已作了实验研究这在某种程度上填补了缺少实验数据和计算结果之间的间隙，并得出了缓解谐振频率偏移和优化天线增益的两点有用的结论作为有意义的应用，介绍了一个4×4元矩形贴片天线阵的设计和分析。

Among them very multinomial and direct or indirect design reachs relevant industry to sensor, detailed situation is as follows: The computer reachs peripheral equipment: Hold pattern recognition of GPS receiver, graph and processing system; Microelectronics and photoelectron yuan parts of an apparatus: Cadmium of parts of an apparatus of coupling of CCD photoelectricity carry on one's shoulder, tellurium is mercuric , infra-red detector; CMOS image sensor; Communication equipment reachs a product: Smooth communication is metric with the instrument that monitor; Civil spacecraft reachs ground facilities: Spacecraft is lukewarm control a product; Automation machinery reachs device: Industrial robot and intelligent robot; Electromechanical key foundation: Intelligent air cylinder, intelligence changes model carapace breaker (voltage 380V, 660V, voltaic 1000A), prevent adopt device of dead apply the brake , the electron controls vehicle of the automatic gear-box, dynamoelectric steering gear that help strength, car to carry diagnostic system, gasoline engine electronic-controlled engine of device, derv is electronic-controlled car of device, alternative fuel changes device, car; Instrument appearance reachs a system: GPS car fixed position, monitoring calls the police attemper system, colliery installs all inspection to measure general management system, hydroelectric station to monitor control system, automatic cruise automatically to control a system (the car is auxiliary drive system), the electron collects fees administrative system (ceaseless car electron pays cost the system), two-phase; New-style medical apparatus and instruments: Medical sensor; Inorganic metalloid material: Component of the pottery and porcelain that suppress report, lukewarm characteristic thermal resistor ; New-style the sources of energy reachs equipment: The solar battery reachs package; The environment monitors an instrument: Monitor appearance, CO automatically to monitor appearance, automatic acid rain automatically sampler and determine appearance, soot, dust is automatic sampler and determine appearance, flue gas is automatic sampler and determine steam of end of appearance, car determines automatically appearance, portable poisonous and harmful gas determines quality of air of type of appearance, flow; The exploration of the sources of energy and mineral products resource develops device: MWD is followed get oil of logging instrument, numerical control monitor below well of deep well logging instrument, colliery reach calamity to forecast; The project measures and equipment of earthly physics observation: Project acceleration measures system, much general to strap weather radar (use be concerned with or double polarization technology), intelligence atmosphere sensor (contain lukewarm, press, irradiation level of wet, wind, precipitation, dew point, sun), personal computer control is automatic and perpendicular artesian well system , marine atmosphere; 1 2 of on one page issues one page

主动化机械及行动措施：工业机械人和智能机械人；机电要害根本件：智能气缸、智能化塑壳断路器（电压380V、660V，电流1000A）、防抱死制动安装、电子节制主动变速箱、电动助力转向安装、汽车车载诊断系统、汽油策念头电控安装、柴油策念头电控安装、代用燃料汽车转换安装、汽车前进前辈电子传感器、高效汽车尾气净化安装、柴油策念头高压供油系统（≥1600Bar）、车辆动静节制系统、被动悬架系统、汽车防碰撞安装、汽车电子防盗安装、车内情况智能节制系统、汽车能源多能源治理系统、空气悬架系统、电子制动系统；仪器仪表及系统：GPS汽车定位、监控报警调剂系统、煤矿安好检测综合治理系统、水电站主动监测节制系统、主动巡航节制系统、电子收费治理系统、两相流量固体流量计、现场总线智能仪表；新型医疗器械：医用传感器；无机非金属材料：压电陶瓷元件、正温特征热敏电阻；新型能源及装备：太阳能电池及组件；情况监测仪器：主动监测仪、CO主动监测仪、主动酸雨采样器及测定仪、烟尘、粉尘主动采样器及测定仪、烟气主动采样器及测定仪、汽车尾汽主动测定仪、便携式有毒有害气体测定仪、流动式空气品质监测车、间歇式空气中有机传染物主动分析仪、COD主动在线监测仪BOD主动在线监测仪、浊度和电导主动在线监测仪、DO主动在线监测仪、TOC主动在线监测仪、TOD主动在线监测仪、氨氮主动在线监测仪、油份测定仪、多性能水质现场监测仪、车载型X萤光测试仪、噪声频谱分析仪、振动仪、辐射剂量监测仪、射线分析测试仪、CH主动监测仪；能源和矿产资本的勘察开辟行动措施：MWD随钻测井仪、数控石油深井测井仪、煤矿井下监测及灾难预告；工程测量和地球物理观测行动措施：工程加速度测量系统、多普勒天气雷达、智能型气象形象传感器(含温、压、湿、风、降水、露点、太阳辐照度)、微机节制主动垂直钻井系统、船用气象形象仪、磁通门罗盘和电位计罗盘、测波仪、智能型大陆水质监测用化学传感器(陆续工作3-6个月)、海流测量仪器（操纵声学、机械、电磁办法）、走航式声学多普勒海流剖面仪、声学应答开释器、声学水位计、近海深浪潮汐测量系统；农业工程行动措实行动措施：农业工程行动措施情况计较机主动节制行动措施、温室浇灌营养液主动设置装备摆设与施肥行动措施、巷道式智能化孵化器。

The very important part for wave tomography is to get coefficentmatrix of tomography equations, that is the Jacobin matrix, or deviationderivative matrix of wave field to physical parameters.

波动成像最关键的一步就是求取成像方程的系数矩阵，也就是雅可比系数矩阵，也即波场对物性参数的偏导数矩阵。

Data analysis and simulation indicate that longitudinal ultrasonic guided wave can be applied to the on-line distance detection of the pipelines covered or sheltered by barriers.

数值分析和仿真结果表明，利用纵向超声导波可对有障碍物覆盖的管道，有阻碍物遮挡的管道进行长距离、有效的、省事省时的在线检测，与理论分析相吻合。

A basic method of wave_number in three dimensions（MWN3D） is employed to solve the thermal conductive equation in this paper. Meantime, we take some numerical experiments to discuss the reliability and adaptability of this method.

给出了三维热导方程波数域的基本解和算法（MWN3D），并通过数值模型的方式验证、讨论了这一方法的可靠性和适应能力。

The Complex Frequency Image Method which estimates the positions of poles by the positions of maximums of the negative second order derivative in complex plane is presented, and on its basis the Complex Frequency Trap Method is given.

提出了由复平面上负二阶导数的极大值的位置来估计极点位置的复频图象法，并在它的基础上给出了复频陷波法。

If C1 is too small, it discharges during the D1and D2 nonconducting in terval, and more output ripples result.

它在D1和D2不导通期间C1放电很大，会增大输电压的纹波。

We have no common name for a mime of Sophron or Xenarchus and a Socratic Conversation; and we should still be without one even if the imitation in the two instances were in trimeters or elegiacs or some other kind of verse--though it is the way with people to tack on 'poet' to the name of a metre, and talk of elegiac-poets and epic-poets, thinking that they call them poets not by reason of the imitative nature of their work, but indiscriminately by reason of the metre they write in.

索夫农 、森那库斯和苏格拉底式的对话采用的模仿没有一个公共的名称；三音步诗、挽歌体或其他类型的诗的模仿也没有——人们把&诗人&这一名词和格律名称结合到一起，称之为挽歌体诗人或者史诗诗人，他们被称为诗人，似乎只是因为遵守格律写作，而非他们作品的模仿本质。

The relationship between communicative competence and grammar teaching should be that of the ends and the means.

交际能力和语法的关系应该是目标与途径的关系。