而选频平衡法的核心是选频放大器。
The core of this method is the selected-frequency amplifier.
电路核心部分由微分电路和选频电路组成。
The core part of the circuit is differential and frequency selection.
自动选频功能的实现提高了移动网络的质量。
The function of selecting frequency automatically can make the mobile network better.
最后设计的选频电路性能完全满足3gpp的要求。
Finally, the performance of the designed frequency selective circuit completely met the 3gpp 's specifications.
提出了一种改进的选频有源噪声控制(FSFANC)算法。
A modified algorithm of an Active Noise Control system based on Frequency-Selective Filter (FSFANC) is proposed.
选频平衡法测量局部放电具有超过1000倍的干扰抑制能力。
The selected-frequency balance method would be with 1000 times of disturb restrain capacity when it is used for measuring partial discharge.
在实验室进行周期信号分析时，通常使用选频电平表来测量其频谱。
When periodic signals are analyzed in the laboratory, we measure the frequency spectrum of signals usually by a selection level meter.
利用频率选择表面（FSS）代替普通金属面构成选频反射面隐身天线。
By means of frequency selective surface (FSS) instead of metallic surface, a stealthy reflector antenna with small radar cross section (RCS) is constructed.
其中的选频网络一般可以设置在放大电路中，也可以设置在正反馈网络中。
The selecting frequency network usually located in the amplifying circuit, or located in the positive feedback network.
文中以电感电容为输入电路，全面分析了用选频平衡法测量局部放电的原理。
The measurement principle of selective frequency balance method with input circuits of inductance and capacitance for PD detection is analyzed in detail in this paper.
采用窄带滤光片作为选频元件对精确波长激光器高频调制特性进行了小信号分析。
The small signal analysis for high frequency modulation characteristics of specific wavelength laser diode with narrowband filter was presented.
布喇格结构通常是一种具有连续性波纹相位的周期结构，有良好的选模、选频特性。
Bragg structure is usually a kind of periodic structure with continuous corrugation phase, which has excellent mode selectivity and frequency selectivity properties.
采用归一化变换的方法，使不同选频滤波器变换为标准低通滤波器，简化了设计过程。
The adoption of the unitary transform method can transform different frequency filters into the standard lower pass filters, and thus simplify the design process.
分析了用运算放大器组成正弦波振荡电路的起振条件和输出电压幅值的调节及选频网络的构成。
This paper is involved in the analysis of oscillation starting condition, output voltage amplitude adjustment, and frequency selection network composition of sinusoidal coave oscillation circuit.
实际上，复交替投影神经网络不仅可用于信号处理中的带限信号外推，还可用于选频、陷波等场合。
In practice complex alternating projection neural networks can be widely applied to signal processing, such as band-limited signal extrapolation, frequency selector and trap filter.
利用线路的分布参数电路理论，分析了线路的选频特性，提出了广域系统低频振荡的谐振传播机理。
The characteristic of selecting frequency of lines is analyzed based on distributed parameter circuit theory. Then, the resonance mechanism of low frequency in wide area is proposed.
一般情况下，为使滤波器在任意频段都有良好的频率分辨力，可采用恒带宽带通滤波器，如收音机的选频。
Under normal circumstances, in order to filter at any frequency band have good frequency resolution, can be used with a broadband constant-pass filter, such as radio frequency-selective.
这种装置无需将增益介质放在液氮中，也不需要多个光栅选频或其他复杂而昂贵的器件，具有结构简单，易实现和成本低等优点。
Without cooling the gain medium in liquid nitrogen or using gratings and complex, expensive devices, this fiber laser has the advantages of being simple and easily attainable at a low cost.
本文结合GC 301 - 01型中速平缝机及885型高速平缝机的降噪减振研究，提出了一种新的平衡方法——选频动平衡。
A new method on dynamic balance. Selected-frequency dynamic equilibrium has been put out and applied Successfully to the reduction of industrial Sewing machine Tape GC301-01 and Tape 885.
本文报导了我们在混合型轴流一氧化碳激光器选频的研究成果，以及作者在适宜于光化学反应的轴流一氧化碳激光器主副腔方面的理论研究进展。
This paper will report the new achievements in our research on frequency tuning means of mix-structure co axial flow laser, especially on composite cavities of co laser suit for photochemistry.
采用铜管和端面镀膜的光纤制作f - P传感器，白光光源经过腔长受温度调制的F - P传感器选频后，用平面光栅和线阵CCD实现光波波长的解调。
After frequency selecting when white light walks through the F-P sensor which cavity modulated by temperature, wavelength demodulating is realized with a plane grating and CCD.
采用铜管和端面镀膜的光纤制作f - P传感器，白光光源经过腔长受温度调制的F - P传感器选频后，用平面光栅和线阵CCD实现光波波长的解调。
After frequency selecting when white light walks through the F-P sensor which cavity modulated by temperature, wavelength demodulating is realized with a plane grating and CCD.
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