QAM at a fixed point-to-point digital microwave systs in the wider application, it has a very high frequency spectrum utilization.
QAM在固定的点对点数字微波系统中应用较广泛，它具有很高的频谱利用率。
Photovoltaic cells are usually most responsive to photons in the visible and ultraviolet parts of the spectrum, but they can also respond to high-frequency infrared photons.
光伏电池通常对光谱中的可见光和紫外线波段的光子受激性最好，但高频红外光子也能激发电流。
The next generation mobile communication 4g called will support very high data transmission rate. It's necessary to introduce technology with high frequency utilization in limited frequency spectrum.
未来的新一代移动通信系统4g需要提供极高的数据速率，在有限的频谱下提供尽可能高的传输速率，这就需要采用高频谱利用率技术。
Wide frequency spectrum can be received and high probability of intercepting can be got and the simultaneously attend signals can be processed by wide band radar EW reconnaissance digital receiver.
宽带雷达对抗侦察数字接收机具有较宽的瞬时频率覆盖特性和较高的截获概率，并能处理同时到达的多个信号。
The ratio of the low frequency to high frequency components in HRV power spectrum(LF/HF) fluctuates with the change in the sleep stages.
HRV频谱中低频和高频成分的比值（LF/HF）随着睡眠深度的变化而波动。
Wavelet transform has a good analyzing feature and a good time frequency localization. Spectrum whitening is a effective tool of frequency compensation in high resolution processing.
小波变换具有分析性质好和时—频局域化好的特性，而谱白化方法是高分辨处理中一种有效的频率补偿手段。
Tremendous growth in demand of the users and limitation of our frequency resource needs more efficient transmission techniques to realize high efficiency of spectrum utilization.
移动用户飞速增长的业务需求和日益紧张的频率资源要求更有效的传输技术来实现频谱资源的高效利用。
But the line located in the low frequency of ship noise spectrum has high intensity and stability. This fact provides new idea in estimating target motion parameters.
而处于舰船噪声低频区的线谱具有很高的强度和稳定度，这一事实为估计目标运动要素提供了新的思路。
A numerical algorithm is set up for the retrieval of optical turbulence spectrum from high-frequency temporal spectra of a light wave propagating through a turbulent atmosphere.
建立了一种数值算法，从光波在湍流大气中传播的闪烁时间频谱的高频特征反演大气光学湍流谱。
This new scheme has the advantages of high spectrum efficiency and suppression of multipath spread, frequency selective fading, jamming and noise.
该体制具有较高的频率利用率，可有效地抑制短波信道中多径时延、频率选择性衰落、人为干扰与噪声带来的不利影响。
It has important significance in the design of high purity spectrum agile signal synthesizer and frequency synthesizer in military digital communication equipment.
这对于高纯频率捷变合成信号源和军用数字通信设备中频率合成器的设计具有重要意义。
High spatial frequency terms of the turbulent spectrum are sampled and low spatial frequency terms are revised using this treatment.
该算法既可对湍流的高频谱抽样，亦可对湍流的低频谱进行修正。
Because of limited frequency band of channel, spread spectrum and MFSK modulations can not resolve that high speed transmission is in contradiction with limited frequency band.
当进行高速水下通信时，由于水下信道的频带有限，扩频和MFSK调制方式无法解决高速率信息传输和可利用信道频带窄的矛盾。
The Fourier spectrum of the wave moment shows that high frequency components will appear and they may cause ringing.
分析结果表明，极端波浪作用下的波浪力矩包含高频成分，是结构物可能产生高频共振响应的原因。
When sampling frequency is quite high, frequency spectrum distributing of digital natural sampling and natural sampling is similarity.
当采样频率比较高时，数字化自然采样法的频谱分布与自然采样法的频谱分布类似。
With the outer scale of turbulence increasing, the amplitude of low-frequency spectrum increases and the high-frequency is invariable.
随着等效湍流外尺度的增加，低频谱的幅值逐渐增大，高频谱保持不变。
High frequency ground wave radar for near ocean inspection and ocean remote sensor is a method that use ocean echo wave Dopier spectrum to deduce the parameters of ocean situation.
高频地波雷达近海监测和海态遥感技术是一种利用海洋回波多普勒谱反演海态参数的方法。
The vibrational modes and spectrum are very different if the free boundary condition is adopted, and the spectrum is divided into low, medium and high frequency branches.
若采用自由边界条件，则模花样和振动频谱完全不同，这时只能分为低频支、中频支和高频支。
The transmission spectrum of a novel long period fiber grating written with the high frequency CO2 laser pulses is theoretical analyzed.
对采用高频CO2激光脉冲写入的新型长周期光纤光栅的透射谱进行了理论分析。
The PMS-15 Sub-Woofer is a 15 "enclosure designed for the reproduction of the sub low frequency spectrum of sound with a very high quality reproduction."
进口工业网的PMS -15低音炮是15“外壳，对声音的低音频率具有高质量的还原作用。”
Spectrum equilibrium filter can compensate high frequency absolutely and has high compensation rate, it can improve the resolution of seismic prospecting to a great extent.
频谱均衡滤波器对高频进行绝对补偿，且具有较高的高频提升速率，可以明显提高地震勘探的分辨率。
The single cylinder misfire can be also done by the frequency spectrum analysis of rotating speed fluctuation at both low and high speeds, but it can not be determined which cylinder is misfired.
利用瞬态曲轴转速波动进行时域分析可在低速时诊断出单缸熄火，在高速时由于波动的复杂性就难以做到。
The promotion nationality high tech, benefits the universe health, is the steed abundant frequency spectrum company's objective.
振兴民族高科技，造福全人类健康，是骏丰频谱公司的宗旨。
Methods The manifestation, internal echo, the L/T ratio, CDFI and RI frequency spectrum feature of the superficial lymph nodes were studied with high frequency and color Doppler ultrasound 89 cases.
方法本组89例，应用高频率的彩色多谱勒超声检查肿大淋巴结的形态及内部回声、纵横比（L/T）、彩色多谱勒血流显像（CD FI）及阻力指数（RI）的频谱特征。
An inverter is constructed to improve the harmonic spectrum of the current by damping the high-frequency components using these components.
构造了一个逆变换器来实现对高频分量的抑止效果。
Present paper introduces the method and the result about the measurement of high frequency D voltage with the remddtrablung spectrum.
介绍了用韧致辐射能谱测量高频D电压方法及测量结果。
First of all, starting with the estimate of signal parameter (e. g. amplitude, frequency and phasic), it makes a research in algorithms of direct, subdivide the spectrum, high-precision FFT and so on.
首先，本文从信号参数(幅度、频率、相位)估计入手，研究了直接法、细化频谱法和高精度FFT法等算法。
The steed abundant frequency spectrum company is devotes to the human health enterprise, the collection branch, the labor, the trade to a body's high technology and new technology enterprise.
骏丰频谱公司是致力于人类健康事业，集科、工、贸于一体的高新技术企业。
The steed abundant frequency spectrum company is devotes to the human health enterprise, the collection branch, the labor, the trade to a body's high technology and new technology enterprise.
骏丰频谱公司是致力于人类健康事业，集科、工、贸于一体的高新技术企业。
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