英汉对照参考资料(12) |
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引用本文: | 林剑秋.英汉对照参考资料(12)[J].探矿工程,1985(1):62-62. |
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作者姓名: | 林剑秋 |
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摘 要: | The Future of Drilling EquipmentBut considering the 80 plus year history ofrotary oil well drilling, I confess to be just asmystified as he that so little has beenaccomplished in streamlining and improvingthe system.Why are rotary rigs, dnilling 5000 ft a
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