粘性指进现象，普遍存在于油气开采的众多驱替过程中，是多相渗流的重要特征之一。
Viscous fingering is one of the vital features of multiphase seepage, which widely exists in various displacements of petroleum and natural gas production process.
以扩散限制凝聚模型(简称DLA模型)为代表的分形生长模型的出现，为研究粘性指进现象带来了新的生机。
The new life was bought to the viscous fingering research, due to the presentation of DLA (short for "Diffusion-Limited Aggregation") model, the type of fractal growth models.
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