【正文】
? DTV enables the provision of High Definition Television (HDTV) which delivers cinemaquality pictures and CDquality sound. ——數(shù)字電視能夠支持高清晰電視,而高清晰電視可以傳送影院效果的圖像及 CD質量的聲音。 —— Analog transmission technology converts sound and pictures into continuously varying electric signals. ? 電視信號會受到來自其他信號源的干擾,因此接收質量要低于理想情況。 ——Television signals are subject to interference by other signal sources, by which the reception quality is less than ideal. Key words and Technical terms ? Digital Television (DTV) 數(shù)字電視 ? optical fiber 光纖 ? electromagic radiation 電磁輻射 ? telephone service 電信服務 ? valueadded service 增值服務 ? interactive enquiry 交互式查詢 ? phonebanking service 電話銀行服務 ? mobile phone technology 移動電話技術 ——the third generation mobile phone technology ? multimedia service 多媒體服務 ? multifunctional 多功能的 ——multifunctional media receiver ? cable TV work plan 電纜電視網(wǎng)絡計劃 ? digital satellite service 數(shù)字衛(wèi)星服務 ? terrestrial 陸地的,地球上的 ——terrestrial television service ? analogue transmission technology 模擬傳輸技術 ? antenna 天線 ? electronic digital code 電子數(shù)字編碼 ? sample 取樣,采樣,抽樣 ? retrieve 重新得到,還原 ? bit stream 比特流 ? settop box 機頂盒 ? vulnerable 易受攻擊的 ——be less vulnerable to distortion ? disc recording 光盤唱片 ? audiotape