名词
中文翻译：Unknown
同义词：
['closed-loop system', 'closed-circuit television (CCTV)', 'closed-feedback system']
例句：
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1. The closed-circuit signalling system is designed to ensure secure communication between the two networks.
闭路信号系统旨在确保两个网络之间的安全通信。
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2.In closed-circuit signalling, data is transmitted directly from one device to another without the need for a physical connection.
在闭路信号系统中，数据直接从一台设备传输到另一台设备，无需物理连接。
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3. The closed-circuit signalling system has proven to be highly efficient in reducing network congestion and improving overall performance.
闭路信号系统已证明在减少网络拥塞和提高整体性能方面非常高效。