Perforation of the direction is a new type of perforating technology which can determine the direction under the well.
而定方位射孔技术是一种可以进行井下有方向性射孔的新型射孔工艺技术。
Vertical folding can be operated three times in combination of the buckle plates and the knives. Perforating, creasing and slitting can also be operated during folding process as required.
采用栅刀混合式折页时，可进行三次垂直折页，并且可在折页过程中根据需要进行打孔、压痕、分切等工作。
The compound complexity of milling, debris handling, perforating and squeezing cement can, and often do, reduce the chance of success.
而且磨铣、处理井眼不干净问题、射孔以及挤水泥作业综合在一起，往往降低了作业成功的几率。
The rational well spacing under certain perforating level and the rational open thickness under certain well density can be determined by this equation.
用此关系式可确定该类油藏给定打开程度下的合理井距及给定井网密度下油井的合理打开厚度。
Conclusion: the femoral diaphysis can be transplanted with perforating branch of deep femoral vessel for reconstruction of the great mass defects of femoral diaphysis.
结论：选用股深血管穿支及其滋养动脉为蒂的同种异体股骨段移植，可用于重建股骨干大段缺损。
CONCLUSION: Perforating branch-muscular branch of medial vastus muscle retrograde flap can be transposed to repair the soft tissue defect around knee.
结论：可形成的以股内侧肌肌支-穿支逆行皮瓣转位可修复膝部软组织缺损。
The negative pressure for under balanced perforating is a key parameter in well perforating design. It can directly influence the productivity and borehole stability of a perforated well.
负压射孔技术的关键参数之一就是负压差的大小，它直接影响油井射孔完成后的产能以及孔眼的稳定性。
The negative pressure for under balanced perforating is a key parameter in well perforating design. It can directly influence the productivity and borehole stability of a perforated well.
负压射孔技术的关键参数之一就是负压差的大小，它直接影响油井射孔完成后的产能以及孔眼的稳定性。
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