... perforated oil filtration board 多孔性滤油纸板 perforating paper 打孔纸 perforating 打孔，穿孔 ...
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According to the principle of manual calculating perforating depth, the paper has designed computer processing method.
依据手工射孔深度计算原理，设计了计算机处理方法。
This paper emphatically describes the application mechanisms of benefit increment perforating device, the keystone of application as well as the application results in TuHa oil field.
本文着重叙述增效射孔器的作用机理，增效射孔器的应用关键及其在吐哈油田的应用效果。
Mechanisms, parameter computations and suitable scopes about hydraulic perforating are all analyzed in this paper.
分析了水力射孔的破岩原理、参数计算以及适用范围。
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