Macroscopic deviations from isotropy occur due to bedding, schistosity and also sometimes fracturing.与各向同性相差很大的情况往往产生于层理, 片理,某些时候则由于断裂所造成.Therefore, CNOOC's proposed drilling fracturing with reasonable sanding recov...
Two kind of separated perforating and pulse fracturing composite charges are studied.论述了低渗油气层的地质特征;研究了两种分离式射孔脉冲压裂复合弹.Macroscopic deviations from isotropy occur due to bedding, schistosity and also sometimes fracturing.与各...
The explosives can be detected for the impact force of their deflagration with the modified cantilever.为了更进一步提高检测灵敏度,本文还提出了一种改进型悬臂梁的研制.In this paper , film magnetostrictive coefficient measurement system was designed bas...
To prove whether or not the fissile spiral type artificial head replacement conforms to biomechanics principles.目的:论证分体螺旋式人工股骨头置换的合理性.Method The biomechanics method of photoelastic experiment was em - played.方法采用生物力学光弹性实...