波导管

A class of exact solutions of the Dirac equation are obtained for an electron in the electromagnetic field of a wave guide formed by two pairs of hyperbolic cylinders.

摘要研究了位于由两对双曲柱面构成的波导管电磁场里的单电子的性质，得到了单电子在场中狄拉克方程的新一类精确解；计算了极化算符的本征函数。

NEXO's new PS R2 Series offers the user a totally integrated loudspeaker solution, in which innovative transducer, waveguide and enclosure designs come together under the control of strategic equalisation from dedicated TD Controllers to ensure extended bandwidth and sound pressure levels, along with a high degree of speaker protection.

法国力素新PS R2系列提供了一个完整的音箱系统解决方案，它内里设计先进的换能器，波导管和箱体设计，交于全新设计和专用的TD处理器作策略性的均衡控制，以确保频响的伸延和声压的水平，及

The procedure is a combination of a circuit model analysis and a full-wave method, and is based on tuning one dimension at a time for simple waveguide structures towards simple tuning goals.

做法是电路模型分析和一个全波的方法的组合和根据每次调整一个维度为简单的波导管结构往简单的调整的目标。

The PS R2 Series offers the user a totally integrated loudspeaker solution, in which innovative transducer, waveguide and enclosure designs come together under the control of strategic equalisation from dedicated TD Controllers to ensure extended bandwidth and sound pressure levels, along with a high degree of speaker protection will now be offered with power options from the NXAMP product range.

新PS R2系列提供了一个完整的音箱系统解决方案，它内里设计先进的换能器，波导管和箱体设计，交于全新设计和专用的TD处理器作策略性的均衡控制，以确保频响的伸延和声压的水平，及极高程度的音箱保护。

For acquiring relations between the eigenfunctions of waveguides and tensor Green function, we first take the Fourier transform of Green function. In isotropic media the simplest image function can be expressed in dyadic form, and in anisotropic media in the form of ABA+-ikz0,where A is the coordinate matrix.

为了得到波导管的本征函数和格林张量函数的一些关系，我们首先对格林函数作富氏变换，它的象函数在各向同性介质波导中以并矢形式作为最简单的表达方法，而在充有各向异性介质波导中可以表为ABA~+e~的形式，这里A是坐标矩阵。

In this paper we studied the general forms and properties of tensor Green functions in waveguides with the methods of eigenfunctions expansion.

本文以本征函数展开的方法，研究了波导管中格林函数的一般性质和形式。

This waveguide tube is chiefly characterized by its simplicity of structure.

这种波导管的主要特点是结构简单。

The Teflon cell contains a pH sensitive indicator-buffer solution consisting of bromothymol blue and sodium carbonate.

更多作为C02选择透过性膜，该液芯波导管同时也是传感器的比色池，我们采用溴百里酚蓝和碳酸钠(Na2CO3)溶液为主要成份的pH敏感指示剂作为缓冲溶液。

Surface seawater samples are pumped into a PVC tube enclosing an inner Teflon AF tube, which served as a long pathlength gas-permeable liquid-core waveguide for spectrophotometry. The Teflon cell contains a pH sensitive indicator-buffer solution consisting of bromothymol blue and sodium carbonate.

该传感器采用Teflon AF 2400液芯波导管作为C02选择透过性膜，该液芯波导管同时也是传感器的比色池，我们采用溴百里酚蓝和碳酸钠(Na_2CO_3)溶液为主要成份的pH敏感指示剂作为缓冲溶液。

Based on the basic equations of electromagnetic waves transmit in waveguide, then focus on three different geometric border waveguide (rectangular, deltaic, cylindrical) for discussion ,the basic equations of electromagnetic waves in rectangular waveguide , deltaic waveguide and cylindrical waveguide are got.

本文在得出求波导中电磁波的基本方程后，针对三种不同几何边界的波导管进行讨论，导出了电磁波在矩形波导、三角形波导和圆形截面的空心波导中传播的基本方程。

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。