closed-circuit television door-telephone的意思|示意
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英 / /
闭路电视门口对讲机
closed-circuit television door-telephone的网络常见释义
闭路电视门口对讲机 ...television securityintercom system 防盗闭路电视及对讲机系统 closed-circuit television door-telephone 闭路电视门口对讲机 Commercial closed-circuit television equipment 商用闭路电视设备 ..