高频脉动属于声波型脉动，低频脉动属于密度波型脉动。
It is shown that the flow instability with high frequency belongs to acoustic oscillation and the flow instability with low frequency is density wave instability.
本文提出了描述并联沸腾管内两相流密度波型脉动的线性均相模型。
This paper presents a linear homogeneous model describing two-phase flow instability.
结果表明：各个参数对密度波型脉动界限值的影响规律与实验值是一致的。
The results of the calculation indicate that the law governing the impact of various parameters on the density-wave type pulsation limit values is in agreement with that of the experimental values.
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