The sand box model is a reduced scale representation of the natural porous medium domain . 砂槽模型是將天然的多孔介質(zhì)區(qū)域按比例縮小的模型。
The miniature working style pictured above is about 30 cm high and accurately reproduces the original one in a proportional ratio 上圖中的縮小的模型大約有30厘米高,是原型按比例縮小的模型。