交流变频电驱动钻机采用VFD驱动和数字控制技术，可简化绞车结构，提高钻机性能。
AC VFD rig adopts VFD and digital control technology, simplifying the drawworks structure and improving the rig's performance.
交流变频电驱动钻机采用VFD驱动和数字控制技术，可简化绞车结构，提高钻机性能。
AC VFD rig adopts VFD and digital control technology, simplifying the drawworks structure and improving the rig's performance.
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