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downhole motor drill
downhole on-off actuator
downhole operation
downhole packer
downhole performance
downhole steam generator
downhole teleview logging apparatus
downhouse
downiness
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downhole performance
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downhole performance
Definitions
[1]
[油气]
（钻具等设备的）井下工作性能
哈罗摩托-百万摩友的摩托车之家！
🎥 Insta360 One R 多镜头运动相机，德国包邮
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downhole performance