Because the device has simple structure and easy use, the device can be widely used to repair the well sleeve tube for the oil field operation.
由于本装置结构简单，使用方便，因此可广泛用于油田作业井套管的修复。
Because the device has simple structure and easy use, the device can be widely used to repair the well sleeve tube for the oil field operation.
由于本装置结构简单，使用方便，因此可广泛用于油田作业井套管的修复。
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