pressure penetration

The cavity expansion theory has been widely used in the analysis of geo-technical problem such as the bearing capacity of deep foundation, interpretation of pressure-meter test and cone penetration tests.

扩孔理论在岩土工程领域有着广泛的应用，如用来确定地基的极限承载力、分析沉桩、静力触探和压密注浆等土工问题。

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Research on ion penetration and diffusion technique at atmospheric pressure

常压非平衡等离子体表面渗扩技术应用基础研究

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A logarithmic function describing the relationship between penetration depth and dynamic pressure divided by the square of nozzle number was derived by fitting the data of the computation results.

通过对模拟结果的函数拟合，发现射流喷射深度与动压比除以喷嘴数的平方之间的关系可用一个对数函数很好地描述。

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Classification parameters for low permeability reservoir has been found, which is based on the impact of flooding efficiency and recovery percent, regarding penetration, movable fluid saturation, the average throat radius and the starting pressure gradient.

从渗透率、可动流体饱和度、平均喉道半径和启动压力梯度对低渗透储层驱油效率、采收率的影响程度出发，建立了低渗透储层分类的参数体系。

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Experimental results indicate that the variation of ambient pressure not only significantly affects the spray tip penetration and the velocity characteristics of spray field, but also affects the droplet size obviously.

结果表明：环境压力的变化不仅可以明显改变喷雾体积大小和喷雾场的速度特性，同时对粒径特征也有显著影响。

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