1)difference frequency差频
1.Spectral analysis of THz pulse waveform reveals that the generation mechanism of THz radiation is nonlinear difference frequency effect.利用超短激光脉冲泵浦电光晶体LiNbO3产生脉冲THz辐射,并用非线性光学差频原理解释了THz的产生机制。
2.According to the analysis of the FM ranging theory presented in a large number of references,there are some mistakes in the theory and some serious deficiencies in the analysis of difference frequency signals.对诸多文献资料关于调频测距信号的理论进行了分析,认为对差频信号的分析方法存在严重缺欠,得出的结论存在若干错误。
3.The paper introduces theory and experiment enclosing generation of mid-infrared pulse by difference frequency.中红外超短脉冲激光在科研、军事、民用等方面具有重要意义,而差频技术作为获得中红外激光的一种重要方法,具有重要研究价值。
英文短句/例句
1.Frequency Control System of Slip-frequency phasor for AC Motor Speed control交流变频调速的滑差频率矢量变频控制系统
2.Study on Multiple Frequency CW Ranging Method Based Quadric Difference Frequency基于二次差频的多频连续波测距方法研究
3.All-optical Wavelength Conversion Based on the Cascaded Sun-and Difference Frequency Generation;和频与差频级联型全光波长转换技术的研究
4.error frequency fidelity criterion差错频数逼真度准则
5.sweep frequency heterodyne-type analyzer扫描频率外差式分析器
6.single conversion superheterodyne一次变频超外差接收机
7.double superheterodyne receiver双变频超外差接收机
8.dual-conversion superheterodyne receiver双变频超外差式接收机
9.triple superheterodyne三次变频超外差接收机
10.Stagger-tuned intermediate frequency amplifier参差调谐中频放大器
11.The Doppler frequency can be obtained as a heterodyne or beat effect.由于外差或频差效应，能够得到多普勒频率。
12.all solid state VHF and UHF TV transposer全固态甚高频和特高频电视差转机
13.Study of LD-Pumped 1064nm Dual-Frequency Nd: YAG Laser with Large Frequency-Difference;LD泵浦1064nm大频差双频Nd：YAG激光技术研究
14.The Loss Difference in Differential Laser Gyros四频差动激光陀螺中差分损耗的探讨
15.Fast algorithm for joint estimation of DTO and DFO一种时差/频率差快速联合估计方法
16.The difference, expressed in Hertz, between the two limiting frequencies of a band.一个频带的上下界频率之差,单位用赫兹表示。
17.THE INVERSION OF RAYLEIGH WAVE DISPERSION CURVE WHICH LOST FREQUENCY RANGE对缺失频段的瑞雷波频散曲线反演的误差分析
18.R. M. S.Value Error for Selective Voltmeter in Measuring FM Signal选频电压表在测量调频信号时的有效值误差
相关短句/例句
difference frequency generation差频
1.Pump bandwidth enlargement of difference frequency generation wavelength conversion based on PPLN;基于PPLN差频波长转换器泵浦带的拓宽
2.The recently progress of THz radiation based on nonlinear optical difference frequency generation(DFG) are summarized.文章介绍了ZnGeP2,GaSe,CdSe,GaAs,GaP,DAST等几种用于太赫兹辐射的中远红外非线性光学晶体的非线性性能,总结了利用它们通过非线性光学差频产生太赫兹方面的最近进展。
3)differential frequency差频
1.The method of differential frequency measurement is studied thoroughly.对差频式测量进行了深入探讨 ,揭示了差频式测量的本质 ,进而将原有的差频式动态传动误差的测量方法移植成一种圆分度静态传动误差测量方法 ,并提出一种用于差频电路工程设计的新方法———齿波对偶法 ,开发了一种用于角位移精密测量的差频式位移传感
2.The paper presents a new method for measuring magnetizing rate of weak magnetic material-differential frequency method.本文介绍了一种测量弱磁性物质磁化率的新方法──差频法。
4)beat frequency差频
1.Generation of millimeter wave by beat frequency of photonic crystal waveguide directional couplers利用光子晶体波导定向耦合差频产生毫米波
2.Based on the traditional laser interferometer, and the tools of theoretical analysis, experiments, computational simulation, the dissertation studies the laser beat frequency interference comprehensively based on the two-beam interference.论文从传统的激光干涉入手,以双光束激光差频干涉为基础,通过理论分析、实验研究、计算机模拟等手段,对激光差频干涉技术进行了系统研究,提出并建立了分时激光干涉测速技术,组建了测量系统并进行了相关的实证实验。
3.the wave of amplitude modulation is created by modulating ligh directly,subsequently,the phase contrast is measured in the light of beat frequency indication,the wave length is measured according to phase change,thus the light speed is obtained and then the error is analyzed.采用光调制法测量光速,直接对光进行调制得到调幅波,采用差频技术测量高频信号的相差,根据相位变化测量波长,得出光速并分析了误差。
5)difference-frequency差频
1.Theoretical study of tunable terahertz radiation based on difference-frequency generation in GaSe and ZnGeP_2 crystals;基于GaSe和ZnGeP_2晶体差频产生可调谐太赫兹辐射的理论研究
6)difference-frequency generation差频
1.Nonlinear optical difference-frequency generation(DFG) scheme was a useful way to meet the requirement and good complementarities for traditional laser technology.室温工作的连续可调谐相干光源在痕量气体检测技术中有着重要的应用价值,非线性差频方法是获得室温工作的中红外相干光源的有效途径,是对传统激光光源的重要补充。
延伸阅读
差差1.犹参差。不齐貌。
