以下为句子列表：
英文: During drilling operations, power is directed to the various machine functions by a pump power drive gearbox . The actual configuration is dependent on the drilling process.
中文: 发动机的动力通过齿轮箱以及其驱动的液压主泵被传递到各个工作部件,实现对各个钻机功能操作.用户可根据实际的要求灵活选择设备配置.
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