circuit television monitor
closed-circuit television door-telephone 闭路电视门口对讲机 closed-circuit television monitor 闭路电视监察器 closed-circuit television security and intercom system 防盗闭路电视及对讲机系统 ..
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circuit television monitor
电路电视监视器
以上为机器翻译结果，长、整句建议使用 人工翻译 。