... 下位词：subordinate words 下尾管：liner running 下微动螺旋：lower tangent screw ...
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下端尾管 pipe lower tail
下尾管
Bottom liner
以上为机器翻译结果，长、整句建议使用 人工翻译 。
在尾管内下封隔器，循环确信尾管环空畅通后下入水泥承留器固井。
The liner was cemented by cementing retainer after its annular was assured expedite by setting packer in liner and making circulation.
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