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词汇
電視映像管
释义
電視映像管
diàn shì yìng xiàng guǎn
电视机的主要构成部分之一。其功用是将电波还原成电视影像。其构造可分电子枪与萤光幕两部分,当电视信号由电视机的信号转换器转变成强弱不同的电压后,经过电子枪转化为强弱不同的电子束,扫描于萤光幕上,就能使影像重现。
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更新时间:2026/3/27 12:43:54