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频率扫描
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  frequency scan
    The paper uses serial communication to control frequency scan of multi-receivers as soon as applying the feature of Win32 multithread and multiproc to make signal's real time collection and identification,which realizes the synchronization of serial communication and signal collection and identification.
    该文应用串行通信技术对多台接收机进行频率扫描控制的同时,根据Win32操作系统支持多线程和多进程的特征,进行信号的实时采集与识别,实现串行通信与信号采集识别的同步。
短句来源
    With giving birth to steady frequency scan signal, the Phase Lock Loop(PLL) circuit is the most impoprtant circuit part in the design.
    PLL锁相环路是本系统的关键电路,它产生稳定的连续的频率扫描信号。
短句来源
    On the basis of current harmonic research, harmonic analysis program is developed as a module of Power System Analysis Software Package (PSASP) in this paper, which includes modeling of power system components, frequency scan for system response, harmonic power flow for balanced system and for unbalanced system.
    本文针对谐波对电力系统的影响和谐波治理的现状,在当前研究水平的基础上,在PSASP 的数据平台上开发了电力系统谐波分析程序,其中包括谐波分析中的各种系统元件的建模、系统频率扫描、对称系统及不对称系统谐波潮流计算等分析功能。
短句来源
  frequency sweep
    Furthermore, basic element determining open /close loop system frequency response by using frequency sweep technique, involved in a variety of methods, is fully verified to be correct, through both manual and automatic frequency sweep at different input position in the control loop with BW 1 variable stability aircraft. So that the various methods of measuring stability margin are ensured to be effective and feasible.
    并就各种方法的基本环节——频率扫描确定开环/闭环系统频率响应的具体方法,通过BW-1变稳机人工手动扫频和试验信号发生器不同位置扫频激励试飞进行了验证,结果是正确的,从而确保了各种测取稳定裕度方法的有效可行。
短句来源
    Since the approach bases on state-space, it requires no frequency sweep and frequency response curve fitting and therefore has a better numerical property.
    该判据是基于状态空间描述的,从而消除了频率扫描过程和频率响应曲线拟合过程,并具有较好的数值性态.
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  “频率扫描”译为未确定词的双语例句
    Design and Realization of Weatheradio Receiver with Autoscan
    一种带有自动频率扫描的气象报警接收机的设计实现
短句来源
    A new theory is introduced to direct measure the tuning off degree of resonant grounding power network through frequency signal scanning. Combining with computer technology,a intelligent measuring circuit is designed to measure the tuning off degree so as to realize inspecting and measuring the running status of distributing power network.
    提出了通过对谐振接地配电网进行频率扫描来直接测量其脱谐度的新理论 ,并与微机技术相结合 ,设计了这一关键参数的智能化测量电路 ,从而使对配电网运行状态的实时监测得以实现
短句来源
    Analysis shows that ECM is the generalization of both the two-parent GA with arithmetic crossover operator and the multi-parent recombination GA with occurrence based scanning crossover operator. And the forming operation is the convex combination of the whole parental population.
    分析表明,ECM是采用算术交叉算子的两父辈遗传算法以及采用频率扫描交叉算子的多父辈交叉遗传算法的推广,形成操作是父代群体编码的凸组合.
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  frequency scan
The high resolution spectra are measured tuning the length of a CO2 waveguide laser by means of a PZT yielding a frequency scan of 230 MHz around the CO2 laser lines.
      
Our frequency scan data, as well as our data for the time course of resistance and capacitance, show that the fast change is associated with both the under-the-cells and between-the-cells resistance.
      
The high sensitivity of the intracavity arrangement allowed very strong double-resonance and two-photon transition signals to be observed with high microwave-frequency scan-rates (1 GHz/min), and low microwave pumping powers (≦10mW/cm2).
      
In this way an idler frequency scan of 100-150?GHz could be obtained, after which the signal frequency hops ahead over the FSR of the intracavity etalon of the OPO (207?GHz).
      
Low noise, mode-by-mode absorption spectra are recorded at a high acquisition rate (laser frequency scan greater than 400?GHz/s) and covering four orders of magnitude in absorption coefficient.
      
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  frequency sweep
Fatigue crack growth rate test using a frequency sweep method
      
Fatigue crack propagation characteristics of a diesel engine crankshaft are studied by measuring the fatigue crack growth rate using a frequency sweep method on a resonant fatigue test rig.
      
A novel criterion for the thermorheologically simple material, and a procedure to calculate the shift factor from the angular frequency sweep and temperature ramp data were presented.
      
Various dynamic mechanical tests (strain sweep, frequency sweep, and time sweep) were performed to estimate viscoelastic characteristics and fatigue behavior.
      
Active head oscillations were performed at four discrete frequencies (0.12, 0.32, 0.80, 2.0 Hz) and over a frequency sweep between 0.1 and 2.0 Hz.
      
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This paper presented the principles of optic read-in equipment and PcO2 acou-stooptic deflector, as well as the requirments of scanning frequency, linearity, optic resolution, brightness and inversion efficiency for the deflector in OCR.

本文介绍了光学读入装置和氧化碲声光偏转器的工作原理,以及OCR对偏转器的扫描频率、扫描线性、光学分辨率、亮度特性和转换效率等的一些技术要求。

Based on the requirements for flight control system stability margin. Especially a new method, derived from the minimum singular value concepts of return difference matrix (RDM), can be applied to the flight validation of multi channel/loop complex system stability. Furthermore, basic element determining open /close loop system frequency response by using frequency sweep technique, involved in a variety of methods, is fully verified to be correct, through both manual and automatic frequency sweep at different...

Based on the requirements for flight control system stability margin. Especially a new method, derived from the minimum singular value concepts of return difference matrix (RDM), can be applied to the flight validation of multi channel/loop complex system stability. Furthermore, basic element determining open /close loop system frequency response by using frequency sweep technique, involved in a variety of methods, is fully verified to be correct, through both manual and automatic frequency sweep at different input position in the control loop with BW 1 variable stability aircraft. So that the various methods of measuring stability margin are ensured to be effective and feasible.

根据飞控系统稳定裕度的要求,给出了几种求取稳定裕度的方法,尤其是提出的基于返回误差阵奇异值的稳定裕度判定方法,可解决多通道多回路复杂交联系统的稳定裕度评价问题。并就各种方法的基本环节——频率扫描确定开环/闭环系统频率响应的具体方法,通过BW-1变稳机人工手动扫频和试验信号发生器不同位置扫频激励试飞进行了验证,结果是正确的,从而确保了各种测取稳定裕度方法的有效可行。

A new theory is introduced to direct measure the tuning off degree of resonant grounding power network through frequency signal scanning.Combining with computer technology,a intelligent measuring circuit is designed to measure the tuning off degree so as to realize inspecting and measuring the running status of distributing power network.

提出了通过对谐振接地配电网进行频率扫描来直接测量其脱谐度的新理论 ,并与微机技术相结合 ,设计了这一关键参数的智能化测量电路 ,从而使对配电网运行状态的实时监测得以实现

 
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