...频率,它克 服了无线发射时由于电磁波的反射所带来的重影, 放像效果变得更好，故称为闭路电视 （Closed Circuit Television-CCTV）。
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Closed circuit television CCTV system CCTV系统
CCTV Closed Circuit Television 闭路电视 ; 闭路电视系统 ; 闭路式电机 ; 工业电视
ACCORDING to a much-reported survey carried out in 2002, Britain then had 4.3m closed-circuit television (CCTV) cameras-one for every 14 people in the country.
根据2002年公布的统计数字，英国拥有430万个闭路电视监控器，平均每14个英国公民就拥有一个。
IP cameras are most often used for IP surveillance, a digitized and networked version of closed-circuit television (CCTV).
IP摄像机通常用于IP监测、数字化和网络化的版本的闭路电视(CCTV)。
On a typical day in a big city you may be filmed by hundreds of closed-circuit television (CCTV) cameras.
在一所大城市里的一天，你可能已被闭路电视（CCTV）摄像头记录了上千次。
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