barrel-type core bit
...筒真空过滤机 barrel-type airless shot-blasting machine 滚筒式抛丸清理机 21世纪教育网 barrel-type core bit 筒式取心钻头 barrel-type pump 多级离心泵 21世纪教育网 ..
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该工具主要由提升控制系统、安全接头、稳定器、内外筒、全闭式岩心爪和取心钻头等部件组成。
This kind of tools mainly consists of lifting control system, safety joint, stabilizer, inner and outer barrels, full-closed core catcher, and coring bit.
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