Compared with conventional equivalent porous medium model, the water level changes simulated by this double medium flow model are slower and the time of being stable is longer.

相对于等效多孔介质模型，双重介质模型模拟的水位下降速度更小，达到稳定的时间更长。

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NAUI Advanced Open water Diver or equivalent. For this course, equivalency is proof of certification beyond entry level with experience in deep diving and underwater navigation.

NAUI进阶潜水员或相同等级的潜水员。潜水员必须提出相关证照以证明有超越基础入门之深潜与水中导航的实际经验。

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