波导

The STK CPW is delayed blowback operated weapon that fires in single shots and in full automatic mode.

波导在沙头角延迟后坐力操作的武器，单杆大火和全自动模式。

The effect of the boundary condition in elastic guided-wave system is discussed.

讨论了弹性波导系统的边界状态在整个系统的作用。

The cutoff frequency of heteromophic waveguide in special structure is solved with the matching of electric and magnetic field on the invented boundary by vector partial differen-tial operator theory.

该文用矢量偏微分算子理论通过虚拟边界的电场和磁场的匹配求解特殊结构的异形波导的截止频率，这一方法可以精确而方便地求出几乎所有模式的截止频率。

Microwave measurement ; Dielectric resonator ; Cavity resonator ; Evanescent waveguide

微波测量；介质谐振器；谐振腔；截止波导

This method may be used in the research of incompleteness in waveguide and resonant cavity with complicated structure.

这一方法可以用于波导的不连续性研究和任何复杂形状的谐振腔的计算。

In addition to their field distributions, the overall influences of core chirality on cutoff and dispersion characteristics are studied.

系统地分析了芯区手征导纳对其模式截止特性和色散特性的影响，并研究了这种波导结构的模场分布特性。

This paper presents the principle of measuring the chirality parameter of chiral materials in microwave circular waveguide.

本文提出了用普通微波圆波导测量系统测量手性材料复手性参数的方法。

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。

Analysis of high-power millimeter wave circular waveguide TM01-TE11 mode converter.

牛新建，李宏福，谢仲怜。高功率毫米波圆波导TM01-TE11模式变换分析。

The system is assumed to be free of any losses and the fields of separated regions in circulator cavity are expanded by means of mode-matching method.

没有磁偏场作用时，我们提出一种行之有效的在给定频率下设计H面波导环行器中部份高度铁氧体性的新方法。

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。