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计算了圆柱壳中低阶和高阶周向模态结构振动波的频散结果，得到了相应的频散曲线。着重分析了近场波和衰减驻波的性质及其随频率变化的规律，结果表明：纵向伸缩近场波和扭转近场波都不具有通常意义上的纵向伸缩和扭转的性质，弯曲近场波则具有通常意义上弯曲性质；衰减驻波大体上是弯曲性质的驻波。文中把低阶和高阶周向模态情况下波的频散规律也作了比较。
The frequency dispersion results of the vibration waves in the low-order and high-order modes in the cylindrical shell are calculated, and the corresponding dispersion curves are obtained. The properties of near-field and standing-wave attenuation and their regularity with frequency are emphatically analyzed. The results show that both the longitudinal retraction near-field wave and the torsional near-field wave do not have the properties of longitudinal stretching and twisting in the usual sense. Waves have the usual curved nature; standing wave attenuation standing wave is essentially a standing wave. In this paper, we also compare the wave dispersion rules of low-order and high-order circumferential modal.