查询词典 control element

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。

Water is the significant control element of urban environment.

水是城市环境的重要控制因素。

Then we introduce the software system of GRMP, including the implementation of Control Element and Forwarding Element.

然后，我们介绍了GRMP的软件系统，包括控制件和转发件的实现。

This paper is based on N-type MOS-HBT-NDR circuit to design a new type of logic gate circuits, The use of a monostable-bistable transition logic element logic gates to realize the principle of operation,,and NMOS devices to control the input stage circuit NDR circuit switching action, And the overall modulation circuits I-V characteristic curve.

中文摘要此篇论文是以N型MOS-HBT-NDR电路来设计新型逻辑闸电路，利用单稳态-双稳态传输逻辑闸(monostable-bistable transition logic element，MOBILE)电路的操作原理来实现，并以 NMOS元件来控制输入级电路中NDR电路的开关动作，进而调变整体电路的I-V特性曲线。

The first operational control element (28) has two control modes, i.e. a standard mode and a second mode, in order to provide an excellent degree of comfort when using the microtome.

为了实现显微切片机的良好操作舒适性，第一操作单元(28)具有两种控制模式，即标准模式和第二模式。

An automatic balancing head employing permanent magnetic difference frequency motor is designed in the paper, to realize a non-contact transmission of control signal and driving energy between a control element and the balancing head.

李勇设计了使用永磁差频电动机的自动平衡头，实现了控制单元和平衡头之间控制信号和驱动能量的无接触传递。

An automatic balancing head employing permanent magnetic difference frequency motor is designed in the paper, to realize a non contact transmission of control signal and driving energy between a control element and the balancing head.

设计了使用永磁差频电动机的自动平衡头，实现了控制单元和平衡头之间控制信号和驱动能量的无接触传递。

In the feedback regulation system of choles-terol metabolism, SCAP together with membrane-bound transcription factors - sterol regulatory element-binding proteins control transcription of the genes encoding enzymes of choles-terol and fatty acid biosynthesis.

在胆固醇代谢的反馈调节系统中，SCAP与膜结合转录因子胆固醇调节元件结合蛋白(sterol regulatory element binding proteins；SREBPs)等调节因子，共同控制一系列酶编码基因的转录过程，包括胆固醇和脂肪酸生物合成过程中所需的酶。

The method utilizes an optical device which consists of polarization control elements and polarization beam splitting pieces for realizing the multi-switching of polarization or non-polarization light; in a position sequence, one polarization beam splitting piece is arranged on a main optical path at the back surface of each polarization control element, thereby commonly constituting a 'single-pole double-throw' optical switch with a controller; the controller changes the polarization state of input light beams by driving the polarization control elements according to the control logic, and the input light beams are switched to any one path on an output channel through the polarization beam splitting pieces, thereby completing the designated optical information processing function.

利用偏振控制元件和偏振分束片两种光学元件组成的光学装置实现偏振或非偏振光的多路切换；在位置序列上，每个偏振控制元件后面主光路上放置一块偏振分束片，并和控制器共同构成一个'单刀双掷'光开关；控制器按照控制逻辑驱动偏振控制元件改变输入光束的偏振态，并通过偏振分束片将输入光束切换到输出通道上的任何一路，来完成指定的光信息处理功能。

In this paper, Plate Girder Element and Virtual Laminated Element were used to analyze P.

中文题名预应力混凝土斜拉桥施工控制研究副题名外文题名 Construction control study of P.C.cable-stayed bridge 论文作者施笃铮导师徐兴项贻强教授学科专业结构工程研究领域\研究方向学位级别博士学位授予单位浙江大学学位授予日期2002 论文页码总数123页关键词预应力混凝土斜拉桥施工控制斜拉桥桥梁施工馆藏号BSLW /2002 /U448 /36 本文用平面杆系理论和空间虚拟层合单元法，在对预应力混凝土斜拉桥整桥结构进行分析的基础上，用正装迭代法对该斜拉桥进行分阶段施工仿真分析；又通过建立有约束的非线性优化模型，对预应力混凝土斜拉桥的施工控制参数（初始张拉索力和立模标高）及成桥状态进行优化，进而建立预应力混凝土斜拉桥施工控制系统。

Chrysanthemum of 10 thousand birthday is lax to edaphic requirement, with the arenaceous qualitative loam with fecund, good drainage had better.

万寿菊对土壤要求不严，以肥沃。排水良好的砂质壤土为好。

He unstepped the mast and furled the sail and tied it.

他拔下桅杆，把帆卷起，系住。