The envelope of the beat frequency will always be stationary in space; no angular velocity.
信封的摆动频率将永远固定在空间;没有角速度。
Brillouin enhanced four wave mixing, whose interference beat frequency drives an acoustic field, can improve the SBS phase conjugation fidelity.
采用四波混频加强SBS的方法,其相干拍频驱动声子场,能提高SBS相位共轭保真度。
The influence of time length and beat frequency on radar range is discussed.
讨论了信号时长和差拍频率对雷达作用距离的影响;
Objective To investigate the effects of different concentrations of propofol on cilia beat frequency (CBF) of isolated human tracheal epithelium.
目的观察异丙酚对离体气管上皮细胞纤毛摆动频率(CBF)的影响。
A remote measurement system of solid surface displacement by laser Doppler effect of grating which was used to produce beat frequency is discussed.
研究了利用运动光栅的多普勒效应进行切向位移的遥测技术。
Theoretical analysis showed that the laser frequency stability and the beat frequency stability is in the same.
理论分析表明激光频率稳定度与拍频频率的稳定度相同。
And tests on the laser's optical performance like wavelength, the facular quality and mode, the fluorescence signal, the beat frequency signal are carried out;