名词
中文翻译：直流电
同义词：
['direct current', 'direct-flowingcurrent']
例句：
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1. The powerstation uses a direct-current generator toproduce electricity.
这个电站使用直流发电机来发电。
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2. Direct-current is the type ofelectricity that flows from one point toanother without changing direction.
直流电是从一点流向另一点，而不会改变方向的电流类型。
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3. In some countries, direct-current is used for heating homes andbuildings.
在一些国家，直流电被用来供暖房屋和建筑物。