NF P98-532-7-中文
公路垂直信号设施——信号标志牌和广告牌的装饰目录——第7部分:指示牌的大小和排版规则
Road vertical signalling equipment - Catalogue of the decoration of signal signs and advertising signs - Part 7: Size and typography rules for directional signs
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Road vertical signalling equipment - Catalogue of the decoration of signal signs and advertising signs - Part 7: Size and typography rules for directional signs