| 单词 | closed-circuit television |
| 释义 | closed-circuit televisionnouna system of televising by cable to designated viewing sets, as within a factory for monitoring production operations, in a theater for viewing a special event taking place elsewhere, or in an office building as an aid to maintaining security. Origin of closed-circuit televisionFirst recorded in 1945–50 Words nearby closed-circuit televisionclosed chain, closed chain compound, closed chest massage, closed circuit, closed circuit method, closed-circuit television, closed comedo, closed community, closed cornice, closed corporation, closed couplet Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020 British Dictionary definitions for closed-circuit televisionclosed-circuit television nouna television system in which signals are transmitted from a television camera to the receivers by cables or telephone links forming a closed circuit, as used in security systems, etc Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012 |
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