Well, what happens over time is the fluid is moving while my curve is staying the same place so it corresponds to something like this.
随着时间的推移，流体会发生运动，曲线保持不动的话，情况就像是这样子了。
If you were thinking of a velocity field, that would measure how much fluid is passing through the curve in unit time.
想象一个速度场，它能够度量，单位时间内流体的量。
The laying position and well blowout pressure are analyzed and discussed briefly and the relationship curve of drill bit pressure drop vs flowrate and fluid density i.
对其安放位置及井喷压力进行了简要分析和探讨，建立了钻头压降与流量、流体密度的关系曲线。
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