查询词典 radio wave

After transmission over single-mode fiber 20 km, the power penality is less than 2 dB.

标 签 光通信光纤无线通信系统外部调制器光载毫米波光载波抑制下行链路 optical communications radio over fiber system external modulator optical millimeter wave optical carrier suppression downstreem

The soft X-ray flux of X class flares increases the ionisation of the upper atmosphere, which can interfere with short-wave radio communication, and can increase the drag on low orbiting satellites, leading to orbital decay.

在软X射线磁通的X级耀斑增加了离子化的高层大气，从而干扰短波无线电通讯，并可以增加拖累低轨道卫星，从而导致轨道衰减。

This company produces the multi-purpose microcomputer electrothermal furnaces and the court music stove primarily, may use each kind of flat-bottomed pan to have, smokeless, misfires, the radio magnetic wave radiation, conforms to the international sanitation standard, is the new security environmental protection kitchen utensil, this product uses Germany core technologies, undergoes the multiple lethality experiment, durable, the reasonable price, is the host who the present will replace the electromagnetic oven hits the product, now develops many kinds of models the product.

本公司以生产多功能微电脑电热炉和雅乐炉为文档主，可以使用各种平底锅具，无烟、无火、无电磁波辐射，符合国际卫生标准，是新型安全环保厨房用具，该产品采用德国核心技术，经过多次毁坏性试验，经久耐用，价格合理，是今后代替电磁炉的主打产品，现在研制出多种大家能不能帮我再补充一些厨房用具英语_型号的产品。

In our experiments, the hafnium films were deposited on molybdenum substrates by radio frequency magnetron sputtering technology, and the barium oxide layers were prepared by the chemical method to simulate the grid structure of traveling wave tubes. Then, the surface phase and compositional change in the grid was studied under high temperature by annealing from 900K to BOOK, which can be used in explaining the suppression mechanism of hafnium film.

实验中，利用射频磁控溅射技术在Mo基底上制备了Hf膜，并利用化学方法制备了BaO涂层以模拟行波管栅极结构，随后在N_2保护下，通过在900K到1300K范围内退火，研究栅极处于高温工作环境下表面相结构和成分的变化，以此解释了Hf薄膜抑制栅极电子发射的工作机理。

An integrated radio-over-fiber system with 60 GHz wireless mm-wave transmission by using optical carrier suppression is proposed and experimentally demonstrated.

实验研究了一种采用马赫-曾德尔电光调制器产生60 GHz光毫米波的方法和相应的光纤无线传输系统。

A radio over fiber system to generate optical millimeter wave with four time frequency of the local oscillator frequency using two-cascaded intensity modulators based on optical carrier suppression scheme was investigated numerically and experimentally.

研究了一种采用两个级联外部调制器基于光载波抑制原理产生四倍频毫米波的光纤无线通信系统。

It gave her the code name Donna, codebooks and a short-wave radio to receive instructions from her CIA handlers.

胡安妮塔说，她于1961年开始为中央情报局工作，代号堂娜，中情局还向她提供密码本和短波收音机用以接受指令。

They experimented with the effects of "artificially induced ionospheric depletions on very low frequency wave lengths, on equatorial plasma instabilities, and on low frequency radio astronomical observations over Roberval, Quebec, Kwajelein, in the Marshall Islands and Hobart, Tasmania" Advanced Space Research, Vo1.8, No.

他们实验&在近赤道离子不稳定区域以甚低频波长人工诱导电离层损耗，或者对魁北克罗伯威尔、马绍尔群岛桂哲林和塔斯马尼亚州霍巴特的低频无线电天文观测&（《高级太空研究》，卷1.8，1号，1988）。

In this dissertation, we report spectral line observations of CO molecularof massive star forming regions and circumstellar SiO masers, using the 13.7 mmillimeter wave telescope at Qinghai station of Purple Mountain Observatory,China and Very Long Baseline Array of National Radio AstronomyObservatory, USA, respectively.

本篇论文利用中国紫金山天文台青海观测站的13.7米口径毫米波望远镜和美国国立射电天文台的甚长基线干涉阵对大质量恒星形成区的CO分子和恒星SiO脉泽进行了谱线的观测与研究。

Of Millimeter Wave,Dept.of Radio Engineering,Southeast University,Nanjing 210096

东南大学无线电工程系毫米波国家重点实验室，南京 210096

She gently rebuff ed him, but agreed that they could be friends

她婉言拒绝了，但同意作为朋友相处。

If in the penal farm, you were sure to be criticized.

要是在劳改农场，你等着挨绳子吧！