不过，他们终于将链条固定在盘子的一端，一台大功率的绞车开动起来。
Eventually chains were fixed to one end of the dish and a powerful winch was put into operation.
分析了PWM的调整方式，利用绕线式电机和串电阻调速的原理，提出了一种结构简单、功率强的变阻调速绞车。
PWM mode was analyzed, and a kind of variable-resistance timing Winch being of simple structure and large power supply was put forward by using wire-wound motor and series resistance timing principle.
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;
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