名词
中文翻译：闭合电路
同义词：
['closed circuit', 'closed loop', 'closed loop system']
例句：
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1. The engineer designed a closed-circuit to monitor the temperature of the oil.
工程师设计了一个闭合电路来监测油温。
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2.In the closed-circuit, the electrons flow from one electrode to the other.
在闭合电路中，电子从一端流向另一端。
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3. The closed-circuit was used to control the speed of the conveyor belt.
这个闭合电路被用来控制输送带的速度。