This kind of methods is also called as undulation forecast subtracting, which including wave field extrapolated method, feedback loop method and backscattering progression method.
这类方法也称为波动预测减去法，主要有：波场外推法、反馈环法、反散射级数法。
2
This paper describes the experimental study of two phase density wave oscillation in natural circulation loop. The oscillation curves under different conditions are obtained.
在自然循环水回路上进行了两相流密度波不稳定性的实验研究，得到了不同工况下的实时脉动曲线。
3
The hysteretic loop comparator control method and the triangular wave comparison control method have been analyzed in detail. The simulation and comparison is made.