Through the development of matching tools, a multi-function process tubing string is designed for reducing the liquid level.
通过研制配套工具，设计出多功能井筒降液面工艺管柱。
Through the development of matching tools, a multi-function process tubing string is designed for reducing the liquid level.
通过研制配套工具，设计出多功能井筒降液面工艺管柱。
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