控制信号

To signal to noise, the signal-to-noise ratio of the control of small procedures, based on Matlab.

给信号加入噪声时，信噪比的控制小程序，基于

This method has been used for testing railway signaling control system software and desirable results have been achieved.

这 一方法已应用于铁路车站信号控制系统软件的测试中，并取得了良好的效果。

The features and the development of the train signalling and control system based on communication , as well as its influence on the railway transportation , are analyzed .

分析了基于通信的列车控制和信号系统的特点和发展，以及对铁路运输模式的影响。

In particular, to start state-controlled institutional investors enter the market signal, similar to the function of stabilization fund.

特别是，要启动国家控制的机构投资者进入市场的信号，类似功能的稳定基金。

Utilize mathematical operation of the one-chip computer and control the function, combine the digital circuit of some scale of China, have realized the producing of variable frequency sinusoidal wave and the measurement of frequency , cycle , width of pulse to the signal ,etc.

利用单片机的数学运算和控制功能，结合部分中规模数字电路，实现了一些波形的输出，及对信号的频率、周期、脉冲宽度等的测量，使用单片机使整个系统具有极为灵活的可编程性，能方便地对系统进行功能扩展与改进。

Keywords power factor correction; reversible converter; variable structure control with sliding mode; space vector; digital signal processor

要害词 功率因数校正；可逆变流器；滑模变结构控制；空间矢量；数字信号处理器

Keywords power factor correction; reversible converter; variable structure control with sliding mode; space vector; digital signal processor 学友吧$m F6'5w-PI?

X\；U k'y1关键词功率因数校正；可逆变流器；滑模变结构控制；空间矢量；数字信号处理器

As transmission capacity and band width of signal are increasing, performance of electronic slip ring could not meet the requirement of applied system.

但是随着现代信息控制与处理对信号传输容量和带宽提出了更高的要求，电滑动环不能满足使用要求。

In the past, signal between stationary platform and rotary platform transmitted by electronic slip ring in order to realize remote control.

早期，旋转平台间的信号传输与控制采用电滑动环旋转传输电信号来实现。

Firstly, the directional beam of smart antennas worsens the hidden terminal, and it even introduces new problem of node deafness.

在MAC协议研究中，引入智能天线和功率控制技术后，有助于减小信号干扰，改善链路的传输质量，从而显著改善MAC协议性能。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。