The drilling wire rope of a rig's hoisting system suddenly broke during drilling process, cause serious damage of equipment.

钻机提升系统的钻井钢丝绳在油田钻井过程中突然断裂，造成设备顿钻事故。

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Abstract : the drilling wire rope of a rig ' s hoisting system suddenly brokeduring drilling process , cause serious damage of equipment.

文摘：钻机提升系统的钻井钢丝绳在油田钻井过程中突然断裂，造成设备顿钻事故。

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Including: Sawing, punching, turning, drilling, tapping, milling, polishing, wire-drawing, CNC processing, bending, forming and other deep processing, argon arc welding and assembly.

包括：锯切、冲压、车削、钻孔攻丝、铣、焊接、抛光、拉丝、数控加工、弯曲、成型等深加工、氩弧焊接、装配。

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But, by drilling a series of evenly spaced holes into the wire, Dr Lim has created a periodic structure with a band gap that blocks such light.

ECONOMIST: New-age crystals