The growing ion acoustic wave instability caused by the slow electron drift is studied by both CW and pulsemodulated wave methods.
用连续波和调制脉冲波两种方法研究了由慢电子漂移引起的增长离子声波不稳定性。
2
This paper introduces the influences of phase noise to radar systems. The measurement of phase noise in pulsemodulated carrier is one of the most important techniques.
介绍了相位噪声对雷达系统的影响，这是毫米波精密制导技术的关键课题之一。
3
Dr Learned, however, reckons the pulse-period of a Cepheid could be modulated by a suitable beam of neutrinos.