The winch of extra deep shaft rig is driven by multiple high power motors that paralleled, which guarantees drilling's power requirement;
特深井钻机的绞车由多台大功率电机通过并车后驱动，保证了钻井过程的功率需求；
The winch of extra deep shaft rig is driven by multiple high power motors that paralleled, which guarantees drilling's power requirement;
特深井钻机的绞车由多台大功率电机通过并车后驱动，保证了钻井过程的功率需求；
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