The relation between hoop strain and radius-directional pressure was set up based on the theoretics of mechanics of materials.

根据材料力学理论建立了活塞环环向应变与径向压力之间的关系式。

youdao

According to the changes of deviation Angle calculated the pressure distribution of directional well.

对定向井井筒压力分布，计算时根据井斜角的变化采取分段计算的方法。

youdao

B are active fractions of Guizhi Tang with dual-directional regulation on rat blood pressure.

为桂枝汤大鼠血压双向调节作用的有效部位。

youdao

Directional drilling, bits, submersible pumps, pressure pumping, oilfield chemicals (which is about to be huge, as shale wells get frakked)--they do it all.

FORBES: Mountains and Molehills