查询词典 wave guide

The Radar Cross Section of an S-shaped circular wave guide and that coated with absorber layer on the inner wall are computed by the fast Iterative Physical Optics method using algorithms of initial value succession and Forward-Backward Iterative.

在此基础上采用初值继承算法和前后向迭代结合的快速IPO方法计算了采用S弯和在腔体内壁涂敷吸波材料对腔体雷达截面的减缩效果。

A Study of Design,Fabrication and Performance of Cone-shaped Wave Guide Coupler for CO2 Laser Delivery

摘 要：针对CO2激光传输用空芯波导的特点，设计、制备了锥形空芯波导耦合器系统。

They consist of a coplanar wave-guide transmission line periodically loaded with 8 - 32 metal bridges, functioning as capacitive switches. Every switching element consists of a thin metallic membrane actuated by applied bias. Remarkable phase shifter performances were observed. 2 lAl0.96 Si0. 04 bridges MEMS Phase shifter reached to 372/3. 5mm under 20V bias at 35 GHz, the with an insertion loss (S21 of about 4 -7 dB...

该文介绍毫米波MEMS相移器的设计，研究低损耗衬底，Au，AlxSi1-x可动膜对下拉电压和传输损耗的影响，测试表明：21桥相位连续可调的分布式压控开关阵列一毫米波相移器在35GHz时，启动电压5V，20V时相移量达到372°/3.5 mm，并能在不同的控制电压下根据要求改变相移量。

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。

The transmittance performance of LuBiIG garnet film by LPE method and polycrystalline garnet film by RF magnetron sputtering in THz frequency range has been investigated and the results show that garget film is with low absorbance coefficient at THz band, and minimum value is 0.01- 0.2/cm, and garnet films are potential materials in THz wave-guide application.

结果发现：该种石榴石薄膜在THz波段(0.1—3THz)有着很小的吸收损耗系数，最小值为0.01---0.2／cm之间，是一种非常有潜力的THz波导传输材料。

With the development of integrated optics, all kinds of optical wave-guide devices with different function have appeared.

随着集成光学的发展，出现了越来越多的结构不同、功能各异的光波导器件。

As a result that this design, on the one hand, protected microwave system better, on the other hand, it made the microwave transmit efficiently; Using triangle copper plane to couple rectangle wave-guide can make the microwave transmission efficiency reach as high as 92%; Adjusting the magnetic electric current can realize the changes of the magnetic profiles.

这种设计，一方面能很好地保护微波系统，另一方面又能使微波高效地馈入，效率高；同时采用三角形均铜片的耦合矩形波导的设计，使微波转换功率达92%；磁场分布的设计上，通过改变磁场线圈电流来实现，当磁场线圈电流减小时，ECR 区位置朝微波窗口方向移动，将更有利于提高微波的吸收。

Guided-mode propagation analysis ignore the impact of radiation and consider enterable field as linear combination of all Guided-mode,can calculate the location of pixels in wave-guide mode.

导模传输分析法不考虑辐射模的影响，把输入场看成所有导模的线性组合，可计算出波导像点的位置。

By computer driving stepper motor with the help of amplifier circuit and A/D card, the movement of standing wave measuring line and the running of changing attenuator were controlled. Automatically measuring the stae of microwave in rectangular wave-guide was realized.

通过应用计算机驱动步进电机控制驻波测量线的移动和可变衰减器的转动，结合放大电路及模数转换卡，实现了自动测量矩形波导管内微波的工作状态。

By computer driving stepper motor with the help of amplifier circuit and A/D card,the movement of standing wave measuring line and the running of changing attenuator were controlled.Automatically measuring the stae of microwave in rectangular wave-guide was realized.

摘 要：通过应用计算机驱动步进电机控制驻波测量线的移动和可变衰减器的转动，结合放大电路及模数转换卡，实现了自动测量矩形波导管内微波的工作状态。

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。