名词
中文翻译：Unknown
同义词：
['downhole plug', 'downhole packer', 'downhole valve']
例句：
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1. Theengineer used a downhole choke to seal the well.
工程师使用下井封隔器来密封井。
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2. The downhole choke was designed to prevent water from flowing into the well.
下井封隔器的设计是为了阻止水流入井。
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3.The downhole choke was removed to inspect the well's integrity.
移除下井封隔器以检查井的完整性。