It was found that there are two flow patterns in one rolling period under some gas flux and water flux.
实验结果表明，在一些气-水流量区域，两相流体在一个摇摆周期内存在两种流动型式。
The effects of rolling period and rolling amplitude on the transition boundary of flow pattern were discussed.
在此基础上，又进一步地分析了摇摆周期和摇摆幅值对流型转换边界的影响。
The smaller the Reynolds number is, the smaller the rolling period is, and the greater the maximum rolling Angle is, the greater the fluctuations in amplitude of the friction coefficient are.
雷诺数越小，摇摆运动的周期越小，最大摇摆角度越大时，实验段摩擦阻力系数波动幅值越大。
The smaller the Reynolds number is, the smaller the rolling period is, and the greater the maximum rolling Angle is, the greater the fluctuations in amplitude of the friction coefficient are.
雷诺数越小，摇摆运动的周期越小，最大摇摆角度越大时，实验段摩擦阻力系数波动幅值越大。
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