单元

The control center unit of this control system is based on a general-purpose microcontroller AT89C52, with LSI peripheral hardware including signal sampling unit for angular and wind speed, control output and power driving unit, keypad-display-alarm unit, and serial communication and printer interfacing unit.

采用通用微控制器AT89C52，设计了控制系统的控制中心，采用大规模集成电路开发了转角、风速信号采集单元、控制输出与功率驱动单元、键盘显示报警单元、串行通讯与打印接口单元等硬件系统。

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。

The hot-plug power system comprises a backplate equipped with a power supply which is in plugging connection with the backplate, a management module of a detecting unit and an enabling unit and a service module in plugging connection with the backplate; the detecting unit is used to detect whether the service module is stably plugged into the backplate, and if yes, the enabling unit outputs a valid enabling signal to the service module and order the service module to be powered.

热插上电系统包括设置有电源的背板、与背板接插连接，包括检测单元和使能单元的管理模块、和与背板接插连接的业务模块；检测单元用于检测业务模块是否稳定插入背板，当背板稳定插入背板时，使能单元输出有效的使能信号至业务模块，指示业务模块上电。

The firing unit comprises a four-cell missile launcher; a monopulse J-band tracking radar with an operational range up to 17,000m; a TV tracking system with an operational range of over 15,000m in clear weather; an infra-red localiser; a data processing unit; a wire network between itself, the search unit, and other firing units.

发射单元包括一套四单元导弹发射装置；一部单脉冲 J-波段操作距离达到17，000 米的跟踪雷达；一套电视跟踪系统，操作距离在晴朗天气15，000米；红外定位器；一套数据处理单元；它自身、搜索单元和其它发射单元之间的一个导线网络。

The foundational method to construct Command and Control Relationships Network Model is discussed.Entity elements of organizations are divided into Scouters,Decision Makers and Actors.Two dimensions of the power,"influence" and "domination",are studied in the point of sociological view,the conception of C2 relationships is redefined.

研究了构建C2组织的指挥控制关系网络模型的基本方法，将组织的实体要素划分为侦察单元、决策单元和执行单元三类；从社会学的角度分析了C2组织中指挥控制权力的&影响&和&支配&两个维度，并重新定义了指挥控制关系；将实体单元和单元之间的指挥控制关系抽象为网络模型的点和边。

This pole plate in this invention consists of he two piece or much more than two piece of the collection dust grid plate that everyone is in parallel, the alternation of the corona wire is between the two adjacent collection dust grid plate, the anode and the cathode of the high voltage generator connect respectively with the corona wire and the pole plate, the inner frame and the outer frame in this invention are oblong, the collection dust cell in this invention fits in the air inlet of the interior one of the air condition, it is fitted in the air inlet of the air condition engine used the fastening piece, the pole plate in this invention is make up of the conductive plastics.

一种微尘处理器，具有高压发生器及集尘单元两部分构成，其中集尘单元为线板式放电结构，其特征是：所述集尘单元主要部件有电晕线、极板和固定电晕线的外边框和固定极板的内边框，所述极板由两条或两条以上相互平行的集尘栅板构成，电晕线间隔位于相邻的两块集尘栅板之间，高压发生器的正、负两极分别与电晕线和极板相连接，所述内边框和外边框为长方形，所述的集尘单元安装在空调机室内单元的进风口处，用紧固件固定在空调机进风口上，所述的极板采用导电塑料制成。

The effect of joint deformation to truss displacement: 4 kinds of steel tube truss compute models are established making use of shell elements, truss elements, beam elements and combination of beam elements and truss elements.

采用板壳单元、桁架单元、梁单元以及弦杆为梁单元和腹杆为桁架单元的混合模型等四种计算模型分别建立了一个钢管桁架的有限元模型，计算并整理了各模型下桁架腹杆的轴力及各节点的位移。

Finally, based on the theory of Timoshenko beam, a beam model of this crankshaft is built, which is compared with solid model. The results indicate that this beam model can meet the needs of calculation precision and calculation efficiency. With this beam model, the condition in which real loads are put on the crankshaft is simulated. The displacement curves、velocity curves、acceleration curves of the main journals and the pulley of this crankshaft and torsion vibration curve of the pulley are then gained. With these curves, the dynamic characteristic of the crankshaft is analyzed. The conclusion indicates that this crankshaft has good dynamic characteristic.

最后利用Timoshenko梁理论建立了曲轴的梁单元模型，将此梁单元模型与体单元模型进行了比较，结果表明梁单元模型能够满足精确度和计算效率的要求；利用该梁单元模型，模拟了实际条件下的载荷作用时曲轴的响应，得到了曲轴各主轴颈和皮带轮端的位移、速度、加速度曲线以及皮带轮端的扭转振动曲线，分析了曲轴的动态特性，结论表明该型曲轴具有良好的动态特性。

Surface relief caused by the formation of lower bainite in an Fe-C-Si-Mn alloy has been investigated by STM. It was discovered that the subunit which is the lowest structural unit observed by TEM is actually made up of sub-subunits. The surface relief due to the formation of sub-subunit is tent-shaped, and of a non-IPS type, which indicates that the sub-subunit cannot be formed by shear. The height of relief is 60-140nm, and the maximum shape deformation is ca.

用扫描隧道显微镜对Fe-C-Si-Mn合金中的下贝氏体浮突进行了观察研究发现用透射显微镜观察到的最小结构单元——亚单元是由更小的超亚单元组成的超亚单元的浮突为&帐篷&型，而非不变平面应变型，表明它不是切变形成；超亚单元的浮突高度为60-140nm，最大形状变型量约为0.23。

Use the mew accelerate function of OpenGL to accelerate the units display. Have adopted the three dimension graphics and OpenGL's technology, it makes use of Stencil test to carry on cutting operation, which reduces complexity of programming and has raised the speed and efficiency of displaying.

根据离散元单元图可视化难点，结合目前各种国内外图形可视化加速方法特点，我们采用新大加速方法进行单元加速，利用OpenGL加速结合计算机图形学原理加快单元图形显示，通过对剖切单元表面的Stencil操作，减少了大量求法线操作，加快单元剖切操作，减少了编程复杂性，提高了显示速度和效率。

With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务，乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐，因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。