以下为句子列表：
英文: Power is automatically supplied from the external power source even when the batteries are placed in the receiver.
中文: 即使收音机中装有电池也会自动从外部电源供电。
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英文: The advantages of these magnetologic elements are that the information stored does not disappear when external power is shut off and that they do not have to be refreshed while the device is in operation.
中文: 磁逻辑元件的优点是，电源关掉后储存的资讯不会消失，而且装置元件在操作中不必更新资料。
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英文: This paper analyzes and compares between the external power source supply methods adopted in Chinese subway system from six aspects, including the reliability and quality of power supply system, the working management and the project investment etc.. Then
中文: 摘要针对我国目前地铁供电系统所采用的外部电源供电方式，从供电质量、供电可靠性、运营管理以及工程投资等六个方面进行了分析和比较，并得出集中供电方式优于分散供电方式的结论。
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