ntsc colour television system
ntsc colour television system 制彩色电视系统 compatible colour television system 黑白彩色电视兼容制 Frequency Division Colour Television System 分频式彩色电视制 ..
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... 兼容性 compatibility 黑白电视 NTSC制彩色电视 NTSC colour television system (画面)胀缩 breathing ...
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