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active fill-in luminous sign
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active fill-in luminous sign
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主动补光标识
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active fill-in luminous sign
主动补光标识
在反光膜型被动发光标识基础上增加外部照明装置的公路交通标识。向交通参与者传递交通特定信息,用于管理交通、保障公路交通安全。
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