The friction term is assumed to be proportional to the flow velocity with a phase difference.
粘性假设正比于流体速度，相位存在差异。
This article introduced the basic theory and method of measuring the velocity of light using the method of phase difference and how to measure the velocity of light using phase difference in air.
介绍了一台自制的利用相位差法测量光速的仪器的基本原理和方法，并通过对光在空气中的传播速度的测定，使大家对用相位变化测量光速仪器有所了解。
The results showed that the turbulence intensity and turbulent energy of the two-phase flow increased while the transverse velocity decreased in the presence of the temperature difference.
分析已有实验数据表明：在温度场存在的气粒两相流中，两相流场的湍流强度和湍动能将会增加而横向速度将会减小。
The phase difference between velocity of vibrate particle and force was analysed.
通过数学分析得出振动质点的速度与强迫力之间的相位差。
However, for the analysis such as solid phase stress, fluid pressure and flow velocity, the difference between two parameter configurations must be considered.
但在分析软骨的固相应力、液体压力和流动等较深入细致的问题时，两种参数设置结果之间的差异不能忽略。
However, for the analysis such as solid phase stress, fluid pressure and flow velocity, the difference between two parameter configurations must be considered.
但在分析软骨的固相应力、液体压力和流动等较深入细致的问题时，两种参数设置结果之间的差异不能忽略。
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