closed circuit tv watching system
... 跨度为81×81：81 by 81 meters span 闭路电视：closed circuit TV watching system 设备精良，功能齐全：be will designed and thoroughly functional ...
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closed circuit tv watching system
闭路电视观看系统
以上为机器翻译结果，长、整句建议使用 人工翻译 。
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Central air conditioner, automatic fire alarm, closed circuit TV watching system, communication network, public broadcasting and cable TV are all available in the exhibition hall.
展览大厅配有中央空调、自动火警、闭路电视、通讯网络、广播和有线电视。
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