在广播

Firstly it describes the development ,basic principle and application and propagation characteristic of mobile channel , then investigates the system structure of DAB transmitter and receiver separately and the key technology of realization of the digital audio broadcast system.And then discusses the system component of FFT －the demodulation module of OFDM .The 409- points FFT module employs a radix-4 decimation-in-frequency algorithm, includes arithmetic element , read and write address element ,twiddle factor element and control element , is realized by FPGA. In the end , the result is verified in the matlab .

首先概述了OFDM的发展、基本原理和应用以及移动信道的传播特性，接着分别研究了数字音频广播接收机和发射机的系统结构，以及数字音频广播系统实现的关键技术，然后详细论述了OFDM解调模块FFT的系统结构，主要研究了4096点FFT采用基－4按频率抽取实现的算法，整个FFT模块包括了运算单元、读写地址单元、旋转因子单元以及控制单元，并且在FPGA中进行了硬件实现，并在matlab环境下对结果进行了验证。

Ation, invariably known as the BBC (and also informally known as the Beeb or Auntie) is the largest broadcasting corporation in the world, employing 26,000 staff in the UK alone and with a budget of ￡4 billion.

英国广播公司或著名的BBC（或在非正式场合中称呼其为Beeb或Auntie）公司是世界上最大的广播公司，雇员光在英国境内就超过2万6千人之众，其预算更高达40亿英镑。

Broadcasting by flooding has been proved to cause broadcast storm problems in the multi-hops wireless networks, and it becomes more serious in a wireless mesh network.

氾滥式广播机制已经被证实在多节点跳跃无线网路上造成严重的广播风暴问题，而此问题在无线网状网路中变得更为严重。

In the 1920s and early 1930s, some educational institutions took an active part in the law-making process with an attempt to establish a noncommercial broadcast system for the society. In the 1960s and early 1970s, along with the civil rights movement and the feminist movement, the dissatisfaction of the civil society with the television stimulated civic media reform movement reflected an even wider scale.

因此，在美国兴起了历史渊源最长、影响面最大的公民媒介改革运动。1920年代到1930年代前期，一些教育组织作为市民社会的代表，积极参与广播制度的立法过程，试图建立非商业的广播系统。1960年代到1970年代上半期，在民权运动和女权运动等社运背景下，市民社会对电视的不满激起了更加广泛的公民媒介改革运动。

A journalist for more than 25 years, Leroy Sievers has worked at CBS News and ABC News, where he was the executive producer at Nightline.

记者25年以上，曾在哥伦比亚广播公司的LeroySievers报告新闻与广播公司电视网如他在nightline监制。

Feel in a lot of people broadcasting station broadcasts soon downfallen when, the rapid change red refresh that sows a guest to go up in Internet people is new to beamed view.

在许多人都觉得电台广播行将没落之时，播客在互联网上的迅速窜红刷新了人们对广播的新看法。

This paper compares the position and clock offset of the satellites insight obtained from the broadcast ephemerides file five days prior and posterior to the cancel of SA policy on WUHN station with that provided by final IGS precise ephemerides.

利用全球GPS永久性跟踪站WUHN站在SA取消前后五天的广播星历文件计算得到在视卫星的位置和钟差，与事后IGS精密星历提供的卫星位置和钟差进行比较分析，说明SA取消对广播星历的影响。

Featuring the BBC Radio 2 Concert Orchestra and working with orchestral arranger Fiachra Trench and producer Mitchell Froom, who has worked with The Corrs on three previous albums, the band set out to create an eclectic mixture of songs and instrumental airs.

因为在英国广播公司的第二调频的一场管弦音乐会的广播中，以及曾经与我们合作过的管弦策划Fiachra Trench和电影制片人Mitchell Froom对我们的想法起到了决定性的作用，在曾经参与制作可儿家族的前三张专辑中，这支乐队在歌曲和乐器编排中创作出了一种比较折衷的混合形式

Broadcasting from the DREAM Broadcast Center located at the Clark Special Economic Zone in Pampanga, channel content is received from program providers, compressed and broadcasted via Mabuhay Satellite Aguila II in DVB and NTSC color format exclusively to DREAM subscribers.

从梦中广播在克拉克经济特区的邦板牙位于中心的广播频道的内容是收到节目供应商压缩，并通过二马部海卫星阿吉拉在DVB和NTSC颜色格式播放专门为梦想订户。

The objectives of the workshop were to: expose participants to new trends on Interactive Radio Instruction; acquaint them with new skills and knowledge on IRI methodology, scripting and project cycle management; inculcate basic skills to enable participants facilitate, monitor and evaluate the project.; create a forum for interaction amongst the implementers of the project and front line workers to evolve best approaches to be adopted to move the IRI project forward, and to enhance the knowledge, skills and competencies of participants to strengthen their capacity to mobilise and sensitise pastoralists to support the IRI project initiative in schools.

此次研讨会有几个目标：介绍有关互动式广播教学的新趋势；透过训练，让参与者熟悉该教学方法，教案的写作及评估管理；灌输有助于有效执行与评估教案的基本技能；在所有的参与者之间，包括执行该训练计画的人以及第一线的工作人员，创造一个能够互动对话的空间，以引导出让互动式广播教学得以顺利进行的最佳方式；以及，增加所有参与者的知识，技能与竞争力以强化他们动员牧民的能力，让互动式教学能在学校顺利展开。

Cynanchum Lingtai apricot production in the average weight 65 grams, the brightly-colored fruit, juicy rich, sweet-sour taste, sweet from the nucleolus, when the late Qing Dynasty famous Shaanxi, Gansu provinces, the Qing imperial court Tongzhi tribute for years.

灵台生产的牛心杏平均单果重65克，果实色泽鲜艳，汁多味浓，甜酸适口，离核仁甜，清末时就驰名陕、甘两省，清同治年间曾为朝廷贡品。

Chenopodium album,Solanum nigrum, and Amaranthus retroflexus were very susceptible to the herbicides. Polygonum persicaria and Abutilon theophrasti were relatively less susceptible to the herbicides, and Lycopersicon esculentum was not susceptible to it. The relationship between reduction rates of weed biomass and PPM values of weed leaves 2,4, and 6 days after treatment was established.

供试的6种杂草对该混剂的敏感性存在显著差异：红心藜Chenopodium album、龙葵Solanum nigrum和反枝苋Amaranthus retroflexus对该混剂最敏感，ED90值分别为47.65、71.67和29.17g/hm2；春蓼Polygonum persicaria和苘麻Abutilon theophrasti敏感，ED90值分别为96.91、114.20g/hm2；而番茄不敏感。