“piston-like displacement”的概念、定义、翻译、参考文献-科学参考

单词	piston-like displacement
释义	piston-like displacement Encyclopedia 理学﹝渗流模型﹞释 piston-like displacement活塞式驱替一种流体驱替另一种流体时像活塞一样把被驱替流体驱走的流动方式。此时假设两种流体间有明显的分界面，且分界面垂直于流动方向均匀向前推进。显然，这是一种为了数学计算简便而假设的流动方式。
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