查询词典 wave guide

Researched influence of frequency on characteristic of electromagnetic wave transmission in tunnels, and analyzed characteristic of electromagnetic wave transmission in circular, arches and curved tunnels by method of metal wave guide, and gives approximate formulas of attenuation rate. Main conclusions we obtain are as follows: in circular,rches tunnels, if frequency is higher, attenuation rate is smaller, it is beneficial for EM waves to transmit, in curved tunnel, higher frequency, more attenuation rate ...

研究了频率对井下电磁波传输特性的影响，采用金属波导法分析了圆形、拱形及弯曲隧道中电磁波的传输特性并给出衰减率近似公式，得出主要结论：在圆形和拱形隧道中，频率越高，衰减率越小，越有利于电磁波的传播；在弯曲隧道中，频率越高，衰减率越大，不利于电磁波的传播；通过特性曲线与井下实验数据相比较得出在900MHz左右为井下无线通信系统传输信号最佳频段。

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。

Compared with other wave-guide material, glass is not so good on the thermal conduction, and its transmission loss is bigger, but it is easy for processing, especially the wave-guide surface can have much higher degree of finish.

虽然玻璃较其它波导材料导热性能较差、传输损耗较大，但由于易加工，尤其是波导面可达到很高的光洁度，且价格低廉，因此硬质玻璃波导CO_2激光器仍具有很高的实用价值。

This paper analyses the coupling wastage in columniform wave guide gas laser,and gives the function between the coupling wastage of laser guide modulo EH11 and the position and radius of reflector.

分析了圆柱形波导气体激光器中的耦合损耗，给出了最低阶波导模EH11的耦合损耗与反射镜位置、曲率半径的函数关系。研究表明：反射镜的位置和半径存在着最佳值，在取得最佳值时，可得到最低的耦合损耗

Huang Ronghui%K Gambo On other wave guide in stationary planetary wave propagations in the winter Northern Hemisphere 中国科学A辑, 1983,null

陈文%黄荣辉中层大气行星波在臭氧的季节和年际变化中输运作用的数值研究Ⅰ常定流的情况，大气科学， 1996，null

Based on the wave equation, this paper describes the underwater acoustic propagation by a wave guide model,and computes the model.

文摘：通过求解波动方程建立了水声在波导中传播的模型并进行了仿真计算。

Based on field experiments and theoretical analysis,the sensitivity of TDR to the nature of wave guide materials and to the length of wave guide was studied.

介绍了6050X1型时域反射仪的基本结构和测定土壤含水率的原理，通过试验分析了它对导棒材料性质及导棒长度的灵敏性。

Based on the wave equation, this paper describes the underwater acoustic propagation by a wave guide model, and computes the model.

通过求解波动方程建立了水声在波导中传播的模型并进行了仿真计算。

Based on the combination of theory and practice, the scattering and leaky characteristics of various surface wave guide structure are systematically investigated, a set of design curves and optimal criterion are given, which have practical significance in millimeter-wave engineering.

从理论和实践的结合上对多种表面波导行结构的辐射和散射性进行了深入的研究，给出了一套在毫米波工程中有实用意义的设计曲线和优化判据。

The resulting list of rules became the first draft of the "Rogue Wave Java Style Guide."

这份规则列表最终就成为了Rogue Wave Java Style Guide的最初草稿。

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。