利用该关系式建立了出砂判别模式和井壁稳定性分析模式，在实践中取得了较高的符合率。
The relation formula is used to develop the sand production test model and wall stability analytical model.
从而建立了同一普通螺纹中两者之间的定量关系式；
Their quantitative relation is set up in the same screw thread.
基于连续流体理论和其运动学关系，建立了力平衡方程关系式。
The force balance relations were set up on the basis of continuum fluids theory and the kinematic relations.
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