Such assumptions sometimes may result in narrow frequency band, large time delay and unstable system.
这样得到的控制系统频带较窄、时滞大，还有可能出现控制系统不稳定。
Based on T type filter, the new ballast can achieve a wide dimming range with a very narrow frequency variation range, and it can operate with low lamp current crest factor.
基于T型滤波器的调光方法，能在很窄的工作频率范围内实现深度调光，同时具有灯电流波峰因数低的优点。
The speech is sparse in time-frequency domain, so the energy of voice signal only concentrates on some narrow frequency, and the energy of voice sources are not overlap each other.
由于语音信号是时频稀疏的，语音信号的能量主要集中在某些窄带上，且各语音源的能量集中区域不交迭。
The radio provides interoperability and compatibility with IP-based systems and has an extended radio-frequency range and narrow-frequency bandwidth operating modes.
电台提供可以与基于IP的系统的互操作和兼容，并已扩大电台频率范围和窄频带宽操作模式。
The radio offers interoperability and compatibility with Internet Protocol-based systems and has an extended radio-frequency range and narrow-frequency bandwidth operating modes.
该电台兼容基于互联网协议的系统，可进行互操作，拥有扩展无线电频率范围和窄频带操作模式。
The radio offers seamless interoperability and compatibility with Internet Protocol-based systems and has an extended radio-frequency range and narrow-frequency bandwidth operating modes.
无线电台提供了与互联网协议为基础的系统无缝链接的互操作性和兼容性，并拥有扩展的无线电频率范围和窄带操作模式。
With its narrow operating frequency scope and low measuring precision, traditional phase difference measuring system can 't satisfy the requirement of modern phase array technology.
传统的相位差测量系统，因其工作的频段窄，测量精度低，已不能满足现代相控阵技术的要求。
The relationship shows that the maximum bandwidth is limited for these algorithms and becomes narrow when the center frequency is lower and the imaging squint angle is larger.
这种关系表明雷达可用的信号带宽是有一定限制的，随着工作频率的下降和成像斜角的增大，可用的信号带宽会变得越来越小。
Due to the frequency pulling of FLL, the passband of the filter in PLL can be made very narrow to suppress the noise, and the PLL can lock carrier's phase with high accuracy.
由于有锁频环的频率牵引，锁相环路滤波器可以设计得很窄，具有很好的抑噪性能，满足精确跟踪载波相位的要求。
A process which is coupled to the narrow band of brain temperature could allow all normal human brains to be affected by a sub-harmonic whose frequency range at about 10 Hz would only vary by 0.1 Hz.
与大脑温度的狭窄范围相对应的一种过程可能使得正凡人脑遭到一种频次范围在大约10赫兹并且只在0.1赫兹范围内变化的次谐波的影响。
The weak intonation is shown in the following features: low fundamental frequency, narrow pitch range, and the rising of boundary tone.
祈使句语气的弱化通常体现在以下几个方面：降低基频、缩小基频范围、以及抬高边界调。
The key technique of this new filter is how to achieve the extreme narrow band-pass width and a slight deviation of central frequency.
如何实现极窄的通带宽度和极小的中心频率偏差是研制中所解决的关键技术问题。
This paper discusses the theory analysis and circuit design of high-frequency high power source which is modulated by narrow pulse.
本文对窄脉冲调制的高频大功率源进行理论分析和电路设计。
On the aspect of hardware, they include: narrow pulse and high frequency ultrasonic sensor's design, high frequency signal generator and receiver's design, high speed data completed sampling's design.
因此本文还详细阐述以下内容：硬件方面采用了高频窄脉冲信号发生及接收放大电路、高速数据采集电路；
A process which is coupled to the narrow band of brain temperature could allow all normal human brains to be affected by a subharmonic whose frequency range at about 10 Hz would only vary by 0. 1 Hz.
加在大脑温度窄带上的一个处理能够允许所有正常的人类大脑被谐波范围在大约10赫兹正负0.1赫兹的次谐波所影响。
In this paper, based on a narrow IIR BPF cascaded by an adaptive FIR filter, a novel fast adaptive algorithm for sinusoid frequency detection in noisy environment is depicted.
提出一种新的自适应算法估计被噪声污染的正弦波信号的频率，依据IIR窄带滤波器和自适应FIR滤波器的级联，形成快速有效的自适应算法。
The frequency pseudocolor-coded speech spectrogram is then obtained by means of a sampling narrow slit placed at Fourier plane in white-light optical spectrum analyzer.
然后在白光光学频谱分析系统中，利用放置在傅里叶频谱面上的取样狭缝得到按频率假彩色编码的频谱图。
The result showed that the analyzer has wide input frequency range, narrow RBW (Resolution Bandwidth) and high scanning accuracy, and it reaches the international advanced level.
测试结果表明所设计的分析仪输入频带宽、频率分辨力和扫频准确度高，达到国际同类产品先进水平。
Many existing CO DSL modems may only support a relatively narrow receive frequency range, which will increase the difficulty of estimating the much wider bandwidth far-end loop noise.
许多已有的CO(中心局)dsl调制解调器可以只支持相对较窄的接收频率范围，这会增加估计宽的多的远端环路噪声的难度。
Frequency synthesizer composed of PLL is widely used in radar system because of PLL specialties such as narrow band, signal tracking and filter.
由于锁相环电路具有的窄带、跟踪、滤波等优点，因此在现有的雷达系统中，普遍采用由锁相环构成的频率综合器。
The result has dedicated that it could satisfy the process of PECM in high frequency, narrow pulse width and high-power.
实验结果表明，这种高频脉冲电源在高频、窄脉宽、大功率等方面均能满足该工艺的要求。
Narrow band intermediate frequency digital receiver has been widely used in radar EW reconnaissance. At present, the high speed signal processing is the key point of its researching.
窄带中频数字接收机在雷达对抗侦察中得到了广泛应用，其高速信号处理技术是目前研究的重点。
The more narrow bandwidth selected, then the higher the frequency resolution, but this time to be testing to cover the entire frequency Fan stressed the need to filter the number of very substantial.
所选带宽越窄，则频率分辨力越高，但这时为覆盖所要检测的整个频率范调，所需要的滤波器数量就很大。
It is shown experimentally that a method available for compensating for the diffraction by centre frequency in narrow band filters can effectively improve their stopband characteristics.
本文介绍适用于窄带滤波器的中心频率衍射补偿方法。实验表明，此方法可以有效地改善滤波器的阻带特性。
A high power, narrow linewidth single frequency laser diode as one of the key elements of Integrated Optical Rotation Sensor (IORS) is studied.
对谐振式集成光学角速率传感器IORS的关键器件之一——大功率、窄线宽光源进行了分析与实验。
To meet with the requirement of PECF finishing, pulse power source with high frequency, narrow pulse width and high current is designed.
为了满足螺旋锥齿轮等大型零件的脉冲电化学光整加工的要求，设计了高频、窄脉宽、大电流的脉冲电源。
The conic errors produced by frequency band narrow, quantization error, and installation error of gyro and low attitude update rate were analyzed.
研究了由陀螺频带不足、量化误差和安装误差，以及姿态更新率过低造成的圆锥误差。
The traditional bubble frequency correlation to estimate regular channel could not be used to predict the narrow channels.
根据常规通道内的经验计算公式，不能很好地描述窄流道中的汽泡频率特性。
The accumulated fatigue damage was calculated in frequency domain by equivalent stress method and equivalent narrow band method respectively.
在频域内分别用等效应力法和等效窄带法计算了累积损伤。
The Side tuned mass damper (STMD) has been used more often in control of structure vibration, but its controllable frequency range is relatively narrow.
单频调谐质量阻尼器已被较多地用于结构振动控制中，但是它的被控频带比较窄。
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