In communications, a trial of educational television via satellite, first used by India in 1974. 在通信技术中,一种通过卫星进行电视教育的试验,1974年首先在印度使用。
Educational television : an often closed-circuit video system that provides instructional material. 教育电视(ETV):通常以闭路形式提供教学材料的视像系统。
Documentaries are educational television ans just now I watched a good documentary about World War2. 纪录片是有教育意义的电视(节目),我刚看了一部有关二战的纪录片。
Evaluation; Index; System; The scientific and educational television programs; 评价;指标;体系;科教电视节目;
There are other forms too. The educational television are providing services through the public broadcasting networks and through closed-circuit transmissions within school systems. 电视还有其他节目类型。教育电视(ETV)节目为公共广播网和学校闭路传输系统提供节目。