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1·The envelope of the beat frequency is depicted as the grey areas.

信封的摆动频率是描述的灰色地带。

2·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；

3·The changes of the myocardial beat frequency before and after administration were counted.

通过计数器计数给药前后心肌细胞搏动频率的变化。

4·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。

5·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。

6·A tunable GaAlAs diode laser is used as a chirp signal source, the distance is detected by calculating the beat frequency.

由可调谐半导体激光器产生一个啁啾信号，通过测量拍信号频率计算距离。

7·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。

8·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。

9·This paper studies power tuning curve and beat frequency tuning curve of 6328a transverse Zeeman laser adopted mutually orthogonal magnetic fields.

本文研究了采用正交磁场的波长为6328a的横向塞曼激光器的功率调谐曲线和拍频调谐曲线。

10·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。