名词
中文翻译：直流电
同义词：
['direct current', 'electric current']
例句：
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1. The DCCA cable is used to transmit power from the substation to the distribution system.
直流电缆用于将电力从变电站传输到配电系统。
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2. The DCCA cable is a crucial component in the electrical grid.
直流电缆是电网中至关重要的组成部分。
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3. The DCCA cable was installed to improve the reliability of the power supply.
安装直流电缆是为了提高电力供应的可靠性。