Vacuum tube encryption arrangement looks easy, it is very difficult, the main problem is a liner tube hole connection is too narrow after the processing difficulty, easy deformation.

真空管加密排列看起来容易，做起来是很难的，主要问题一是内胆管孔连接处过窄后加工难度大，极易变形。

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The level to Canadian and France's is about 0.82 hole in 11 single impermeable liner landfills.

加拿大和法国的11个单土工膜衬层的填埋场中每英亩有0.82个漏洞。

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Based on the structural principle of the drilling liner hangers, with the analysis of down-hole situations, the article sums a set of success experience to operate the hangers.

文章以尾管悬挂器的结构原理作为基础，结合井下情况加以分析，总结出了一套成功使用悬挂器的经验。

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We know with some certainty that workers were in the final stages of setting the final sections of pipe (production liner) in the hole and cementing it in place.

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We then waited for months for the liner to be removed from this tiny wellbore so that oldstyle guns , too fat to fit through the liner, could be placed into the hole.

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