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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Telecommunications cable ： ウィキペディア英語版 Telecommunications cable Telecommunications cables are a type of guided transmission mediums. Cables are usually known to transmit electric energy (AC/DC); however, cables in telecommunications fields are used to transmit electromagnetic waves; they are called ''electromagnetic wave guides''. Telecommunications are based on transmitting modulated waves/signals through a medium and receiving them. When the distance between the transmitter and receiver is far, or an unguided medium transmission is used, antennas are used; otherwise, telecommunications cables are used in guided medium transmission. ==Types== There are several types of telecommunications cable:〔(cable (electronics) - Britannica Online Encyclopedia )〕〔(A Guide for Telecommunications Cable Splicing )〕 *transmission lines when electric signals are transmitted; *waveguides when electromagnetic waves are transmitted; *optical fibers when light signals are transmitted. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Telecommunications cable」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.