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6.世界彩色电视广播的现状及发展趋势在电视事业较发达的国家中,大体都基本上完成了电视播送网从黑白到彩色电视的过渡,基本上建成了覆盖全国的发射网,建成了
6. Status Quo and Development Trend of World Color TV Broadcasting In the countries with more developed television businesses, the transition of television broadcasting network from black and white to color television has been basically completed. Basically, a transmission network covering the whole country has been completed and completed