以下为句子列表：
英文: In this study, the effect of rotating elliptical inner cylinder on the instability of flow field, the relationship between azimuthal wave speed and the angular speed of inner cylinder, and the so-called 'hysteresis' will also be investigated experimentall
中文: 本文主要目的除了藉由实验比较椭圆与圆形截面内柱两种系统加速过程中不稳定发生时机、流场流况的差异外；对于所谓的迟滞现象于两系统中的发生过程亦将探讨，此外内柱几何形状所造成高阶不稳定于圆周方向的波形相速度变化，也是本文的探讨重点。
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