波段

While they may be fairly vague about the price, after a little discussion most will agree on it falling within a certain band.

虽然他们可能是相当含糊的价格后，很少讨论，多数人会同意它属于某一波段。

Full-wave analysis of this antenna is implemented based on the new method that combines the conformal FDTD method and the dyadic Green's functions for cyl...

设计和仿真结果表明，在不增加剖面厚度的情况下，工作于L和C波段的天线带宽(VSWR≤ 2 。0 )可达近 30 %甚至更宽。

In the second chapter, during the study of compound x-ray refractive lenses, diffraction function of compound lens is derived in the light of refraction and absorption effect and the design theory of X-ray is deduced using diffraction theory in connection with the characteristic of X-ray band.

在第二章X射线聚焦组合透镜的研究中，针对X射线波段的特性，综合考虑折射和吸收效应得出组合透镜的衍射屏函数，利用衍射理论推导出X射线聚焦组合透镜的设计理论并进行结构设计与微细加工制作技术研究。

We firstly studied the material feature in X-ray band. Base on this, we defined the diffractive screen function. Subsequently, by using diffraction theory, it studied the focus performance and transmission efficiency of X-ray compound lens.

1理论研究。首先研究了X射线波段的材料特性，并据此得出了物面的衍射屏函数，然后利用衍射理论研究了X射线组合透镜的聚焦性能和透射效率。

The theoretical and numerical study of such a device is reported, including the derivations of the diffractive screen function of the compound lens and the equations of the intensity distribution in the focus plane by considering both refraction and absorption effect and diffraction theory.

针对 X射线波段的特性，综合考虑折射和吸收效应得出组合透镜的衍射屏函数，并利用衍射理论推导出 X射线组合透镜的设计理论。

I was lucky to drive the car freely on the windy road and enjoyed doing the sporty +/- shifting gears for a lot of time. It was fun to drive and expect the car to follow my command. The car twisted with the sharp bends and travelled at high speed without any drama at all. For the rest of my highway travel, I just left the gear to "D" for fuel economy and smooth run.

在测试的路上没有很多的车辆，以致可以让我常常采用六前速的加减浪段，驾驶真的有乐趣，而当X3穿越众多急弯时，它的上乘表现丝毫不会令人失望，其余的时间，我只让它停留在&D&波段。

Solar power and multi-band atomic timekeeping make this a great watch for keeping time on the trail.

太阳能发电和多波段原子计时使之成为一个伟大的手表饲养时间线索。

Airglow and aurora are important optical phenomena. Their radiation, especially ultraviolet radiation contains fundamental chemical and physical information about upper atmosphere and ionosphere.

气辉和极光是高层大气中的重要发光现象，其辐射特性、特别是紫外波段的辐射特性，是高层大气和电离层物理化学过程信息的重要来源。

of designing an achromatic lens with F/#=1 and aperture D=5mm is developed and numerical simulation is performed.

利用这种特性，本文提出了一种变深度亚波长孔阵金属折衍混合透镜（DV- SHAM R/D lens），它是由DV- SHAM lens与折射透镜结合，能够消色差，实现宽波段成像。

A new type of X-band high power microwave source - the Resonator Cerenkov Oscillator-Tapered Amplifier Tube is put forward for the first time in the present paper. The proposed high power microwave device is based on a comprehensive investigation of related research work in the world and is in agreement with the demands to the development of practical high power microwave sources.

在较全面调研和认真分析高功率慢波器件发展趋势的基础上，结合返波振荡器等切仑科夫器件和渐变锥形结构微波器件的特点，提出了一种新型X波段高功率微波发生器—低磁场谐振腔切仑科夫振荡器—锥形放大管。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。