低频

To suppress the noises in PD monitoring of XLPE cable accessories on site, the combined denoising method based on the fusion of ultra high frequency and low frequency measurements was put forward.

本文针对电缆局部放电现场检测中存在的各种干扰，提出了将超高频法和低频法相结合的联合检测方法。

Zhang Qi pointed out that the RFID application has the different frequency band, low frequency, high frequency and ultra-high frequency, at present will speak the high frequency application was still the market mainstream, in the short-term will not change, in 2008 the high frequency application occupied 70% market share, from now on will keep pace with the times unceasingly carries on the development.

张琪指出，RFID应用有不同频段，低频、高频和超高频，目前来讲高频应用仍是市场主流，短期内不会改变，2008年高频应用占70%的市场份额，今后会不断与时俱进地进行发展。

On the basis of analysis on the dynamic frequency after power vacancy,the reason of unideal function of traditional device are dissected: it is set by using assumed load and power vacancy.The changed range of real load power and real power vacancy lead to big error.

在对电力系统出现功率缺额后的动态频率特性进行分析的基础上，剖析了传统低频减载装置动作效果不理想的原因：用假定的负荷和假定的功率缺额整定，由于实际负荷功率和实际的功率缺额变化幅度很大，而造成很大的误差。

In the chapter three, based on the second chapter, by considering the damping effect of the neutral gas and the ion drag force on the dust particle, the electrostatic modes and their instabilities in the dusty plasma in the uniform magnetic field are investigated.

在第二章的基础上，第三章考虑了中性气体的阻尼和离子对尘埃粒子的拖拽力作用，对在均匀外磁场中的尘埃等离子体中的静电波和不稳定性进行了研究，发现中频和低频的波模是衰减的。

This paper designed and made moisture content meters of both high frequency and low frequency with frequency demodulation as its principle, chip as its measuring material and uniplanar scattering-field capacitor as its sensor.

本论文分别设计并自制了以调频法为原理、以刨花为测量介质，以同面散射场电容器为测量传感器的高频含水率测试仪和低频含水率测试仪。

The impulse response on even velocity model and simple lateral variable velocity model shows that the symplectic method can decrease the frequency dispersion and adapt to the lateral velocity variation.

脉冲响应的计算也表明文中的近似方法具有降低频散效应和适应横向变速的能力。

1940S at 12,000 gauss for the low frequency voice coil and 18,000 gauss for the HF coil.

20世纪40年代在12，000低频音圈和18000的高频线圈高斯高斯。

The design of a kind of low-frequency power amplifier was given, including a voltage amplification circuit, a display circuit based on FPGA, and a BEF filter.

摘 要：给出了一种低频功率放大器的设计制作过程，包括电压放大电路、FPGA控制的显示电路、带阻滤波器等部分。

In reference [1] , Waterhouse proposed the method of reducing resonance frequency and dimension of antenna by putting a shorting post in the microstrip patch antenna, and experimented on this kind of antennas.

但是，这种天线在较低频率应用时尺寸太大，不能满足实际要求，从而影响了微带贴片天线在低频频段的应用。

In chapter 3, the mechanism of test table waveform distortion generated by factors of ultra-low-frequency standard vibrator is studies systematically.

第三章对超低频标准振动台的台面波形失真机理进行了系统全面的分析。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。