This paper analyzed the phenomena in satellite vibration test that natural frequency decreases as excitationlevel increases.
针对卫星振动实验中的频率漂移现象进行了分析。
2
Selectivity and excitation rate of laser isotope separation can be enhanced by using the coherent selective Doppler-free two-photon excitation with intermediate resonant level.
利用具有中间共振能级的无多普勒双光子相干选择激发来提高激光同位素分离的选择性和激发速率。
3
The production of brushless excitation system devices with high initial response for large turbogenerators in China has achieved advanced level in the world.