查询词典 band
- 与 band 相关的网络例句 [注:此内容来源于网络,仅供参考]
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Matching facilities: Bed table wide band furniture: Bed, table, wide band repair situation: Good environment: In Zhongqingnalu Haixin plot traffic condition: 12 groups 20 group 208 group 219 group 229 group 303 group 310 group 365 group 365 group 372 groups 37 explained in detail: Four directions Zhongqingnalu in the Haixin plot has two person between hires, the area 16 square meters, the southing, the natural lighting is good, has the kitchen, the bathroom, the wide band, has the direct link municipal government/Taitung/University of Science and Technology/Li Village's vehicle.
个人 配套设施:床桌子宽带家具:床、桌子、宽带装修情况:良好周围环境:重庆南路海信小区内交通状况: 12路 20路 208路 219路 229路 303路 310路 365路 365路 372路 37 详细说明:四方重庆南路海信小区内有双人间出租,面积16平米,南向,采光好,有厨房、卫生间,宽带,有直达市政府/台东/理工大学/李村的车。
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With the support of a major research grant of Zhejiang Province (No. 001101027) and the Plan of Promoting Education of Excellence of Zhejiang University in the 21st Century, this dissertation is devoted to address the above problems and fabricate an L-band EDFA with low cost, high performance and technological innovation.First the mechanism of an erbium doped fiber amplifier is introduced. Various theoretical models based on classical rate propagation equations are summarized and compared for their applications. We use a modified numerical model based on the Giles model, which agrees with the experimental results well. This serves as the theoretical base for the whole thesis and will be used to optimize the characteristics of EDFAs. A novel method based on a map of noise figure and gain is proposed to analyze efficiently the dependence of the noise figure and gain for EDFAs on the EDF length and the pump power. The characteristics of various EDFAs are studied and compared.Secondly, some important parameters are introduced to describe the characteristics of EDFAs. The methods and the experimental setups for measuring the gain and noise figure of an EDFA are emphasized. We introduce how to measure the characteristics of each component of an EDFA, especially the gain and absorption coefficient of an erbium doped fiber.Thirdly, four types of simple and novel L-band EDFA structures with low noise, high gain and low gain ripple are proposed to satisfy the requirement of a DWDM system. They can be classified into two categories. In the first category, a single ASE pumping is served asa secondary pump. This category includes the following three types. Type: a new construction using a fiber Bragg grating in an unpumped EDF section at the input side. Type: a new structure of L-Band EDFA with two-stage pumps, which utilizes the forward ASE as a second pump.
本论文本着科技创新、服务于生产实践的精神,以设计价格低廉,性能优越、结构合理简单的L-band EDFA为目标,依托浙江省科技厅重大科学基金资助项目(001101027)和浙江大学振兴教育计划资助的全光网络的搭建—《光通信技术》课程实验建设项目,展开了如下工作:首先,介绍了掺铒光纤放大器的工作原理,归纳总结了基于速率方程基础的EDFA的各种理论模型,分析比较了各个模型的特点和适用场合,最终选择完善的Giles理论模型作为本论文分析设计EDFA的理论基础;针对实际实验条件提出了修正的EDFA模型的数值计算方法;创新地提出了增益—噪声系数全局分析法,直观有效地分析了EDFA的增益和噪声系数与掺铒光纤长度和泵浦功率的依赖关系,并对各种EDFA的性能作了全面的比较;第二,介绍了掺铒光纤放大器特性参数的定义与测量方法,重点介绍了噪声系数和增益系数的测量方法及实验装置;介绍了组成掺铒光纤放大器各组件的特性测量方法,重点介绍了测量掺铒光纤参数的方法和实验装置;第三,针对WDM系统对L-band EDFA谱平坦、低噪声、高增益的要求,我们创新地提出了四种不同的L-band EDFA结构,按设计思路可以分为两大类:一类是基于单抽运二级泵浦法,这一类包括在未泵浦掺铒光纤的输入端插入一根布拉格光纤光栅的两段L-band的EDFA的新结构;基于前向ASE光作为二级泵浦源推动下一级EDF工作的泵浦分配、两段级联L-band的EDFA的新结构;基于单根光纤光栅、泵浦分配、两段级联的EDFA;另一类则是基于同时应用前后向C-band ASE作二级泵浦源的双抽运法,如基于前后向ASE光作为二级泵浦源的三段级联L-band的EDFA的新结构。
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Under the linear relationship between narrow band albedos and broadband albedos, by setting up multiple linear regression equation with the narrow-band albedo of the same time MODIS image data, it achieved retrieval from narrow-band to broadband albedo. The conversion of broadband albedos was fulfilled finally.
在窄波段反照率与宽波段反照率之间存在线性关系的前提下,通过与相同时段MODIS图像数据的窄波段反照率建立多元线性回归方程,构建回归模型,实现窄波段到宽波段的反演。
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The Fourth Band: The fourth band consists of exteriorized entities who are more "advanced" in consciousness than those on the bands below, and have arrived from outside the band areas to prepare for their final human experience on the Earth "below".
第四个环带:第四个环带由意识比下面环带更&先进&的形象化实体、以及来自环带区域以外的准备到&下面的&地球去经历他们最后的人生经验的实体组成。
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P: K 8 A; D The Fourth Band: The fourth band consists of exteriorized entities who are more "advanced" in consciousness than those on the bands below, and have arrived from outside the band areas to prepare for their final human experience on the Earth "below".
q2 H9 C& g! h4 z q2 U; s+ q 第四个环带:第四个环带由意识比下面环带更&先进&的形象化实体、以及来自环带区域以外的准备到&下面的地球去经历他们最后的人生经验的实体组成。
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The heating band has a cloth band (3) made from fibre interfused into radiating far infrared ore powder, a heating body (4) for generating heat, a heat storage body (5) used for storing heat, a alleviation body (6) for slow the heat discharge to the outside, and a bag decorating cloth (7) for enclosing all the cascading components when the band shape cascading components are formed in above order.
其结构为具有由混入放射远红外线矿石粉末的纤维构成的布带(3)、用于使其产生热量的加热体(4)、用于储蓄热量的蓄热体(5)、用于缓慢向外部放热的缓和体(6)、按此顺序层叠,形成带状层叠部件的同时,使用袋状装饰布(7),套装全部层叠部件。
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The study about the flux and index of gamma-ray loud blazars show:(1)there is significant correlation between the luminosities in gamma-ray and VLBI radio energy band;(2)there are strong anticorrelarions among the observed indices of soft X-ray, hard X-ray and gamma-ray. For the FSRQs, the whole X-ray emission was contributed by synchrotron self-Compton emission, for the HBLs, the X-ray emission was dominated by synchrotron emission while the soft X-ray emission is dominated by synchrotron emission and the SSC emission dominate the hard X-ray energy band for LBLs;(3) there are strong radio-radio and radio-optical flux correlations for the quasar 3C 273. The higher frequency emission leads those in lower frequency. The multi-band complex indices strongly correlated with the high frequency flux which implies that the object is becoming bright when the energy spectrum is harden.
通过对γ噪Blazar天体的谱指数、流量的相关研究,发现(1)51个样本blazar的γ射线光度与VLBI光度之间存在显著相关;(2)软X、硬X以及γ波段的观测谱指数之间存在较强的反相关,对FSRQs,无论是硬X射线还是软X射线的辐射都是逆康普顿辐射的贡献,而对于HBLs来说,则是同步辐射的贡献,对LBLs,在软X射线波段以同步辐射贡献为主,在硬X射线能区以逆康普顿贡献为主;(3)3C 273的射电各个波段以及光学之间存在强相关,高频辐射一直领先低频辐射,3C 273的多波段复合谱指数和高频流量之间存在强的反相关,意味着当能谱变硬时对象变亮。
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METHODS: Eight fresh patellae specimens were divided into two groups at random, AO steel wire group (n = 2) and absorbable tension band group (n = 6) to create models of transverse fractures, which were separately fixed by absorbable tension band, steel wire tension band + Kirschner wire to measure their biomechanics function. If fracture gap reached 1.0 mm, the fixation failed.
随机分成AO钢丝组2个和可吸收张力带组6个,制成横断骨折模型,分别用可吸收张力带、钢丝张力带加克氏针进行内固定,测定它们的生物力学性能,骨折端分离1.0 mm为固定失效。
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Sousa and his wife were enjoying a European vacation in 1896, when they saw a startling newspaper article. Sousa's band manager, David Blakely, had died a few days earlier. Soon Sousa and his wife were on a ship heading home to New York. On the journey home, Sousa started hearing "the rhythmic beat of a band playing within my brain. It kept on ceaselessly, playing, playing, playing. Throughout the whole tense voyage, that imaginary band continued to unfold the same themes, echoing and re-echoing the most distinct melody." When he got home he wrote down the music for what would become "The Stars and Stripes Forever."
苏沙和他的太太在1896年一次愉悦的欧洲之旅途中,看到一篇令人吃惊的报导,苏沙的乐团经理大卫布雷克在几天前突然去世,他们在知道这个消息后立刻搭船回到纽约,在返航途中,苏沙开始听见「乐团在我脑中演奏的节拍、不停地演奏、演奏、演奏,整个回程中那个想像中的乐团一直重复著同样的旋律、并重复演奏最特别的一段旋律」,在他回到家写下整首旋律后、就完成了「永恒的星条旗」的初稿。
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Sousa and his wife were enjoying a European vacation in 1896, when they saw a startling newspaper article. Sousa's band manager, David Blakely, had died a few days earlier. Soon Sousa and his wife were on a ship heading home to New York. On the journey home, Sousa started hearing "the rhythmic beat of a band playing within my brain. It kept on ceaselessly, playing, playing, playing. Throughout the whole tense voyage, that imaginary band continued to unfold the same themes, echoing and re-echoing the most distinct melody." When he got home he wrote down the music for what would become "The Stars and Stripes Forever."
苏沙和他的太太在1896年一次愉悦的欧洲之旅途中,看到一篇令人吃惊的报导,苏沙的乐团经理大卫布雷克在几天前突然去世,他们在知道这个消息后立刻搭船回到纽约,在返航途中,苏沙开始听见「乐团在我脑中演奏的节拍、不停地演奏、演奏、演奏,整个回程中那个想像中的乐团一直重复着同样的旋律、并重复演奏最特别的一段旋律」,在他回到家写下整首旋律后、就完成了「永恒的星条旗」的初稿。
- 相关中文对照歌词
- Band Plays On
- Guitar Band
- We're An American Band
- Band On The Run
- We're An American Band
- Ghost Band
- My Band
- Thou Shalt Always Kill
- I Belong To The Band
- And The Band Played
- 推荐网络例句
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The circulation, consumption and reproduction of the trilogy have not only testified to its historical significance and literariness, but also invested it with new meanings.
该三部曲的流通、消费与再生产不仅验证了其历史意义及文学性,而切还赋予它以新的意义。
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If he thought that he could buy me off, he would be wrong.
如果他认为他可以收买我,那他就大错特错了。
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Can I be excused today's lesson?
我可以不上今天的课吗?