closed pipe string

常见例句

双语例句

• Armed at the lower productivity well that could not produce regularly, the closed pipe string and its matching tools were developed according to the theory of exploitation.
  针对低产能油藏（层）存在的供液能力差、油井无法正常生产的问题，根据开采低产能油井（层）的理论，研制了闭式配套管柱及各种配套工具。
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