reverse-circulating tool
... reverse 逆 reverse-circulating tool 反循环工具 reverse-flow gas separator 逆流式气体分离器 ...
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采用水泥承转器挤水泥技术能防止挤水泥浆倒流,且多余的水泥浆能从工具的上部反循环至地面。
Using cement retainer squeezing technology can prevent the cement backward flow, and CAM let the residual cement through the upper party to recycle to the ground.
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