The model is continued by imposing a polar coordinate system on the moving reference frame.
通过把极坐标系作为该运动参照系而继续对模式进行积分。
The moving reference frame is used in the impeller region and the boundary conditions are velocity inlet and pressure outlet.
在计算时对于叶轮区域采用旋转参考系的方式，边界条件分别是进口速度边界条件以及出口压力边界条件。
The possibility of explaining time dilation as a dynamic cause-and-effect phenomenon is explored by calculating the rates of clocks in a stationary and in a moving reference frame.
通过计算静止时钟和运动时钟的时率，探讨了把时间膨胀解释为一种动力因果效应的可能性。
The W3C appears to be moving toward treating the namespace URI as a string that does not need to be resolved against some frame of reference.
W3C似乎开始转变对名称空间uri的看法，将它看作不需要根据一些引用框架进行解析的字符串。
What's behind the answer is the principle of relativity: Fundamental physical observables are the same in any frame of reference, however it's moving.
这个答案的背后下是相对论的原则：无论一个参照系如何移动，其中基本的物理观察都是相同的。
What's behind the answer is the principle of relativity: Fundamental physical observables are the same in any frame of reference, however it's moving.
这个答案的背后下是相对论的原则：无论一个参照系如何移动，其中基本的物理观察都是相同的。
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