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电视机的升级自从英国广播公司(BBC)于1936年在伦敦开通世界上首个公共电视广播以来,电视机技术已取得了长足的发展:从BBC于1953年首先开通彩色电视广播,到日本NHK于1981年进行首例高
TV upgrade Since the BBC opened the world’s first public television broadcast in London in 1936, TV technology has made great strides: from the BBC’s first color television broadcast in 1953 to the Japanese NHK The first high in 1981