CCTV係乜?
回答 (2)
2008-11-17 2:51 am
✔ 最佳答案
英文全寫 :Close
Circuit
Tele
Vision
CCTV是閉路電視之簡稱。是作遙遠監察之用。可作戶內或戶外監察，但一般需要用電線(有線)才能運作，近年也有無線，不過範圍有限。
功能為防盜，防破壞，偵察，監控等。
參考: 日常智識
2008-11-21 7:08 am
A)CCTV means Closed Circuit TeleVision.可以是閉路電視的簡寫。
It is one of the devices of security system.
CCTV system includes Digital Video Recorder (DVR) plus CCTV which connected for local use or remote use (throu. Network)
In past, CCTV is powered by 220Vac, but now by 24/12Vdc only. The size is also reduced.
B) 亦指 中國中央電視台
China Central Television, CCTV
It is one of the devices of security system.
CCTV system includes Digital Video Recorder (DVR) plus CCTV which connected for local use or remote use (throu. Network)
In past, CCTV is powered by 220Vac, but now by 24/12Vdc only. The size is also reduced.
B) 亦指 中國中央電視台
China Central Television, CCTV
收錄日期: 2021-04-16 16:59:35
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20081115000051KK00729