导波

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。

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。

The analysis of loss characteristics for nonideal waveguiding structures is one of the most important practical problems in microwave engineering.

引 言导波结构的损耗与由该结构组成的元件及系统性能的优劣直接相关，因此对它的精确计算在微波工程中占有十分重要的地位。

For the analyses of the nonlinearity of other guided waves, the present approach can be used for reference.

对其他类型导波模式非线性效应的分析，本文作者所阐述的分析方法可供借鉴。

After a description of the basic principle of vertical ultrasonic guided wave, this paper has made an analysis on the variation of the displacement offset of vertical mode variant with frequency; it has also presented an approach by which a pectinate symmetrical transducer be used to effectively detect pipeline flaws.

在纵向超声导波基本原理的基础上，分析了两种纵向模式位移分量随频率的变化而变化的情况，给出了一种梳状对称换能器对管道缺陷的有效检测。

The effects of mesh density on the accuracy of simulation and the effects of wave frequency on wave velocity and attenuation in grouted bolts were analyzed.

同时分析了采用有限元模拟锚杆中传播的导波时网格密度对模拟结果精度的影响。

A method of using ultrasonic guided wave to detect the length of grate column of half buried under different highway roadbed, belongs to nondestructive testing field.

利用超声导波无损检测半埋置于不同高速公路路基中的护栏立柱长度的方法，属于无损检测领域。

The theoretical method presented here can be employed to forecast the shift of the resonance wavelength, and to help the design and fabrication of the metal-coated LPFG.

标 签 导波与光纤光学长周期光纤光栅金属包层光纤三层介质光纤包层模 guided wave and fiber optics long-period fiber grating metal-coated fiber three-layered optical fiber cladding modes

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。