| 红色工服 |
2018-06-14 12:45 |
射孔相关（第四个）
The system’s new perforating gun technology incorporates redundant grounding for reliable firing with any switch system, and threaded gun-to-gun connections that eliminate hand wiring at the well site. Troubleshooting the gun string is now exceedingly simple. At the well site, a gun sub that doesn’t yield a positive electrical test can be quickly unscrewed from the string and replaced. The FracIQ PRO system is available in 0.30-in. 0.35-in., 0.40-in., 0.50-in. holes sizes, and with GEODynamics’ FracIQ shaped charge technology for optimum shot placement.
这段话介绍了一个新型的射孔系统，其中的 doesn’t yield a positive electrical test 该怎么理解呢，请大神赐教，多谢。
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