The bottom of core recovery which means water will get back to the bottom core in about forty seconds, the core is now uncovered.

核心回收率的底部,意思是水会回到核心的地步,在40秒之内，核心现在已经没有覆盖的了。

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The problems of low drilling efficiency and low core recovery due to borehole collapse were solved with pulling in casing while drilling through using combined BHA with casing.

采用组合钻具进行跟管钻进，通过随钻跟入的套管保护孔壁，解决因钻孔垮塌导致钻探效率和岩心采取率低等技术难题。

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Glass steel coring tool is specifically developed for improving the core recovery of conglomeratic weak formation and the core integrality in Liaohe Oilfield.

玻璃钢取心工具是专为提高辽河油田含砾石松散地层取心收获率和岩心完整性而研制的。

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The sale and run-off of non-core assets, first set out in early 2009 at the start of the RBS's three-to-five-year recovery plan, meant a fifth of the balance sheet was to be non-core, and the balance sheet was to be halved in size.

BBC: Lloyds co-operates, RBS shrinks

He said that, time and again, war-ravaged people had asked for help in establishing security and safety, restoring basic services and core Government functions, supporting a political transition and jump-starting economic recovery.

UN: Security Council