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井下套管阀就是为了取代强行起下钻装置而研制的。
The Downhole-Deployment-Valve is designed for the purpose of replacing the need of forced tripping work.
youdao
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井下套管阀就是为了取代强行起下钻装置而研制的。
The Downhole-Deployment-Valve is designed for the purpose of replacing the need of forced tripping work.
youdao