由无粘结性沉积物颗粒和流体间的动态界面的流动条件所造成。

And created by the conditions of flow at the dynamic interface between a body of cohesionless sediments particles and a fluid.

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⑷采用最小携液量和低速非达西流连续流动条件限定最小测试流量；

The minimal amount of fluid carrying of gas well bore model and the continuous flow condition is acquired to limit minimal test production.

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所以即使在正常条件下，这些亚物种间的基因流动也更像是一条断断续续的细流，而不是一条不停流淌的小溪。

So, even under normal situations, the gene flow among the subpopulations is more of an intermittent trickle than a steady stream.

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