就是要采取一定的方法控制住地层孔隙压力，基本上保持井内压力平衡，保证修井的顺利进行。
Is to take certain method control strata pore pressure, basically keep the pressure in the well balanced, ensure the smooth progress of the rig.
用理论模拟的方法分析了各环境参数和控制条件对减压冷藏过程的影响，重点对不同压力、运行模式、表面状况以及三种基本形状的食品进行了研究。
The theoretical simulation was used to analyze the influence of pressure, different operation, wet surface and three kinds of shape to the cooling of food.
本文就生物安全实验室压力控制的不同方法进行比较，介绍了文丘里压力控制阀的基本原理、特点，及工程的实际应用效果。
This paper will compare the different pressure control measure, introduce the principle and characteristic of Venturi pressure control and introduce practice effect.
本文就生物安全实验室压力控制的不同方法进行比较，介绍了文丘里压力控制阀的基本原理、特点，及工程的实际应用效果。
This paper will compare the different pressure control measure, introduce the principle and characteristic of Venturi pressure control and introduce practice effect.
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