... What‘s the lowering weight？下放重量是多少？ Run in HWDP.下加重钻杆 A stabilizer is needed here.这里需要一个扶正器 ...
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... What’s the lowering weight?下放分量是几多? Run in HWDP.下减轻钻杆 A sthvacizer is needed here.这里须要一个扶正器 ...
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