考虑启动压力梯度和介质变形的影响，研究低渗透油藏中直井产量的变化规律。
With consideration of start up pressure gradient and media deformation, this paper studies vertical well production in low permeable reservoirs.
软岩巷道的变形破坏由多种原因造成，受软岩自身强度较低、采动压力、地下水、支护方式、支护质量等综合性因素影响。
The deformed destruction of soft rock is led by many reasons, such as the low intensity itself, the exploiting press, underground water, support and the quality of support etc.
受到结构弹性变形的影响，随着飞行动压的增加，舵面的操纵效率不断下降，副翼甚至会出现操纵反效现象；
Due to the influence of the elastic deformation of flexible structures, the efficiency drops constantly with the increase of the dynamic pressure, which even causes aileron reversal.
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