查询词典 radio-frequency spectrum

Said processor FSB, it is necessary to mention two closely related concepts: the frequency and the frequency, CPU clock frequency is the frequency; multiplier and FSB frequency that is a multiple of the ratio.

说到处理器外频，就要提到与之密切相关的两个概念：倍频与主频，主频就是CPU的时钟频率；倍频即主频与外频之比的倍数。

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On the basis of different frequences, three electromagnetic wave logging methods widely used are Electromagnetic Propagated Resistivity Logging with several mega-hertz operation frequency, Ultrahigh-frequency Electromagnetic Wave Logging with above 200 mega-hertz operation frequency and High-frequency Electromagnetic Wave Logging with some dozens of megaherz operation frequency.

根据所选频率的不同，电磁波测井有三类：几兆赫兹电磁波传播电阻率测井、200 MHz以上的超高频电磁波传播测井、源频率为几十兆赫的高频电磁波测井。

After this text introduced and will imitate the audio frequency signal processing as numerical signal after red shoot outside, the numerical signal that will receive again solution adjust after the audio frequency power enlarger enlarge restore in order to imitate the speech signal, shot the electric circuit outside analyzed to design the audio frequency signal before collecting the electric circuit, signal placed the big electric circuit, frequency to make the electric circuit, red, red circumscribed to accept the electric circuit,, frequency the solution adjusted the electric circuit and audio frequencies to enlarge the electric circuit etc.

本文介绍了将模拟音频信号处理为数字信号后经红外发射，再将接收到的数字信号解调后经音频功率放大器放大后还原为模拟语音信号，在分析设计了音频信号采集电路、信号前置放大电路、频率调制电路、红外发射电路、红外接收电路、、频率解调电路以及音频放大电路等各组成部分。

That is to say, by using the special digital converter or running relevant arithmetic, it converts the radio signal to intermediate frequency signal and completes the base-band signal process that isn"t the veriest SR and is named "software defined radio. This paper introduces the rapid system prototype into the design of software radio system, which has great advantage because rapid system prototype technology can be used to describe the future application.

由于受到硬件性能如A／D、D／A及DSP芯片处理速度的限制，目前的软件无线电系统多采用折中的实现方案，增加专用的数字变频器或者运行数字变频算法，将射频信号变频到中频，然后再进行基带信号处理，这样的软件无线电系统又被称之为"软件定义无线电"，它并不是真正意义上的软件无线电。

Recent progress in radio prototype has extended the horizons of radio technology by liberating chronics dependence on hard-wired characteristics including frequency band, channel bandwidth, and channel coding. These efforts have led us to the feasibility of dynamically programmable receivers system of software radio.

软件无线电系统的硬件结构与功能相对独立，这样就可以基于相对通用的硬件平台，通过软件实现不同的通信功能，并可对工作频率、系统频带、调制方式等进行编程控制，系统的灵活性大大增加。

An antenna device and a portable wireless communication apparatus are disclosed to securely lower a local average SAR in correspondence to at least two or more kinds of radio communication systems using different radio communication frequencies even when any radio communication frequency is used.

公开了一种天线装置和便携式无线通信装置，即使在使用任何无线通信频率的时候，也能安全降低对应于至少两种或多种无线通信系统的局部平均SAR。

By means of the discrete frequency spectrum, the frequency spectrum leakage s of the conventional DFT and the DFT with a Hanning window are comparatively analyzed in this paper.

利用离散频谱详细对比分析了DFT的频谱泄漏和加汉宁窗DFT的频谱泄漏现象，讨论了用异步顺序采样值计算电量产生误差的原因，提出了利用异步顺序采样值精确计算电量的方法，实现了畸变电量的精确测量。

Loser here is the frequency spectrum of the distribution curve, complex oscillation amplitude is decomposed into different frequency and different harmonic oscillation, the oscillation amplitude harmonic frequencies arranged in accordance with the graphics is called the spectrum.

在这里输频谱就是频率的分布曲线，复杂振荡分解为振幅不同和频率不同的谐振荡，这些谐振荡的幅值按频率排列的的图形叫做频谱。

The bias of cyclic periodogram with ssinc window is analyzed in both spectrum frequency direction and cycle frequency direction, and that the TA cyclic spectrum estimation is unbiased is proved.

通过分析加ssinc窗的循环周期图在谱频率方向和循环频率方向的偏差，分析了TA循环谱估计是无偏估计。

The use of the web to spread fears that flicking the switch on the LHC could create a Black Hole that could swallow up the Earth particularly concerned him, he said.

他说，使用互联网散布恐慌说启动LHC会生成一个可能吞噬地球的黑洞的做法让他感到忧虑。

Not a single word have I written down.

我一个字也没有写下来。