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钻杆动力钳
释义
钻杆动力钳
Encyclopedia
工学
修井设备
释
drill pipe power tong
钻杆动力钳
用于修井作业时上、卸油管和小钻杆丝扣的机械设备。
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baby monster group
baby playing painting
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Bacau
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Bachelier
Bachelier function
bachelor
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Bachet
Bachet conjecture
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