And the power amplifier can realize accurately tracking and amplification for ac signals with frequency range up to 1000hz.
功率放大器可以实现交流信号的准确跟踪和放大，输出频率范围可达1000赫兹。
Mechanism of the oscillation instability is then illuminated in frequency domain by amplification at the artificial boundary and multi-reflection of wave motion in a finite discrete model.
根据波在人工边界的放大效应和在有限离散模型中多次反射的概念在频域内阐明了这一常见的振荡失稳的机制。
Its parameters can be regulated by keyboard in order to control amplification and cutoff frequency by step.
通过键盘设置参数，实现放大器放大增益步进调节、滤波器带通频率步进调节功能。
The main frequency of vertical direction and horizontal tangential direction both have phenomenon of end amplification which doesn't afford the sadov's formula.
垂直方向主频和水平切向主频都存在着末端放大现象，这与萨道夫斯基公式不符。
This paper goes into the application of the GaAs Dual-Gate FET to the high frequency tuning-amplification and frequency conversion in a TV UHF channel selector and gives some experimental results.
本文讨论了砷化镓双栅场效应管在电视接收机UHF频道选择器中作高频调谐放大和变频应用时的一些考虑，并给出有关的实验结果。
ImpaCt will allow you to hear the high frequency speech cues that traditional amplification does not.
“移频”可以使您听到并辨别传统助听器无法使您听到的高频语言声。
The power FETs are more and more widely used in radio-frequency power amplification in all-solid state transmitter.
场效应功放管在全固态发射机的射频功放中应用得越来越广泛。
Timer can use a different frequency pulses of different frequency pulse amplification by the speaker drive circuit filter, will emit different tones.
利用定时器可发出不同频率的脉冲，不同频率的脉冲经喇叭驱动电路放大滤波后，就会发出不同音调。
Numerical examples are given to illustrate the influence of saturation, soil properties, layer thickness, coefficient of viscoelasticity, and frequency on the motion amplification.
给出了数值算例并进一步研究了饱和度、粘弹性系数、土层厚度以及频率对放大系数的影响。
The results show that this amplifier has a good amplification effect on the pulse signal at a low repetition frequency.
结果表明，本脉冲光纤放大器对低频脉冲信号有很好的放大效果。
When the frequency is higher than the cut-off frequency, as the frequency increases, voltage amplification factor will be reduced, thus the circuit has a "low-pass" characteristics.
当频率高于截止频率时，随着频率的升高，电压放大倍数将降低，由此电路具有“低通”的特性。
The results show that, the natural frequency, dynamic amplification factor and acceleration root of mean square of seat suspension will decrease with the increase of proportional valve input voltage.
研究结果表明，座椅悬架的固有频率、位移传递率及加速度均方根值均随比例阀输入电压的增大而减小；
The results show that, the natural frequency, dynamic amplification factor and acceleration root of mean square of seat suspension will decrease with the increase of proportional valve input voltage.
研究结果表明，座椅悬架的固有频率、位移传递率及加速度均方根值均随比例阀输入电压的增大而减小；
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