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GB/T 1251.3-2008 Ergonomics - system of auditory and visual danger and information signals - 英文版 |
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GB/T 1251.1-2008 Ergonomics - Danger signals for public and work areas - Auditory danger - 英文版 |
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GB/T 1251.2-2006 Ergonomics - Visual danger signals - General requirements,design and testing - 英文版 |
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