beat-frequency system的意思|示意

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。

The new effects of phase-conjugation asymmetric attosecond sum-frequency polarization beat (ASPB) of twin composite color-locking stochastic fields in cascade three-level system are investigated.

研究了级联三能级系统中孪生色锁随机光场的相位共轭阿秒和频极化拍频(ASPB)不对称新效应。