波导

An analytical model for tunneling transmission through a high—frequency potential barrier in a ballistic channel is formulated.

不仅是量子波导中的传播态决定其弹道输运的过程，衰减态在电子波传播中的作用也是不可忽略的。

In chapter 4, the in situ measurement system composed of the six-port reflectometer and the coaxial probe is introduced and some guidelines for in situ measurement is highlighted.

第二章建模和计算先对建模方法和反演方法进行了概述，然后建立了同轴探头的谱域全波模型，着重讨论了伽辽金矩量法求解积分方程有关的积分计算问题，分析了同轴探头高次模式的影响，最后给出了波导探头的谱域模型。

The results as follows,maximum of the derivative was significantly greater(P.01)and value Kof sphygmogram area was less(P.1)in young than elderly group.

结果如下：脉搏波导数最大值是年轻组明显大于年老组(P.01)，波图面积的K值是年轻组小于年老组(P.1)。

The stationary wave method is used to measure the reflectivity of RAMs and its theory is introduced briefly. The emphasis is on the measurement of permittivity by wave guide method.

介绍了吸波材料测量表征的原理与方法，并重点研究了介电常数的测量，给出了利用波导测量线测量电磁参数的方法与步骤。

For the localized waveguide resonance,the tangential electric field component Ey is seen to be concentrated entirely in the rectangular air hole region.

对于由长方形空气孔形成的局域波导共振模式，其等离子体波全部局域在整个长方形空气孔区域中。

The "hot" dispersion equation of this circuit loaded with an electron beam is presented in this paper, and the "Newton downhill" method is used to solve the transcendental equation.

魏彦玉 电子科技大学物理电子学院，成都 610054王文祥电子科技大学物理电子学院，成都 610054介质加载矩形波导栅行波管是一类新型毫米波大功率器件。

To make use of finite element method, the field of electromagnetic wave propagating in trapezium tunnel was studied. The attenuation rate and its numerical analysis were deduced on the foundation of tiny-intervene method and the calculating program was also compiled.

应用有限元方法研究了梯形隧道中的波导场问题，并以微扰法为基础推导了波模衰减率的计算公式，编制了计算程序。

A compact-size coplanar waveguide lowpass filter is designed, simulated, fabricated and measured. The purpose of this thesis is to investigate the performance of miniaturized CPW lowpass filter which is a fifth-order semi-lumped uniplanar Butterworth filter. Our design utilizes transmission line lumped elements consisting of interdigital capacitors and meander line inductors.

本文研究目的是探讨微小化共面波导滤波器设计、模拟、制作与其量测特性，滤波器设计是使用Meander和Interdigital线路结构，其电路特性可等效为电感性与电容性元件，藉由串联Meander和Interdigital线路实现慢波周期结构，Interdigital结构设计的线宽为5μm。

The motivation for these studies is to better understand the Anderson localization of sound and vibrations in composite media, as well as their numerous engineering applications such as elastic/acoustic filters, vibrationless environments for high-precision mechanical systems or the design of new transducers.

而这些研究也具有实际的应用价值，例如，我们可以设计出一种新的弹性波的滤波器、波导器，以及给高精密的仪器设备提供一个无振动的环境等等。

Formula of coupling coefficient of the whispering gallery modes dielectric resonator with dielectric image guide is derived. Results obtained show good agreement with reference.

本章还根据边廊模的角向行波特性导出了边廊模介质谐振器与介质波导间的耦合系数表达式，并对其进行了数值计算，所得计算结果与文献结果相吻合。

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。