名词
中文翻译：直流
同义词：
['direct current', 'direct current', 'direct flow of electricity']
例句：
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1. The electric motor operates by converting alternating current into direct current.
电动机通过将交流电转换为直流电来工作。
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2. In a DC system, the power is transmitted directly from the generator to the load without using an alternating current transformer.
在直流系统中，电力直接从发电机传输到负载，而不使用交流电流变压器。
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3.The battery pack in this car uses a DC system for its energy storage and recharging.
这辆车的电池组采用直流系统进行能量存储和充电。