closed-circuit television reading system
closed-circuit communications system 闭路通信系统 Closed-circuit television reading system 闭路电视阅读系统 closed-circuit television securityintercom system 防盗闭路电视及对讲机系统 ..
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closed-circuit television reading system
闭路电视阅读系统
以上为机器翻译结果，长、整句建议使用 人工翻译 。