1、

Darcy law is the principle law of percolation theory, but percolation of low permeability gas reservoir has its specific characteristics because of the simultaneity of kickoff pressure and gas slippage effect, and the study on them seems to be contradicted.

达西定律是渗流的基本规律,但低渗透致密气藏的渗流还有其特殊性,启动压力和气体的滑脱效应同时存在,两种现象的研究又似乎相互矛盾。

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3、

It can regulate specific gene expression, cellular secretion and membrane permeability.

对基因表达, 细胞分泌,细胞膜通透性等进行调节.

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4、

At present, the important parameters for evaluating the sealing ability of covering bed involve displacement pressure, porosity, permeability, density, mid-value semidiameter of pore, specific surface area and so on.

目前,评价盖层封闭能力的主要参数有岩石的排替压力、孔隙率、渗透率、密度、孔隙中值半径、比表面等。

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