标准名称：NFPA 499-2004 Classification of Combustible Dusts and of Hazardous (Classified) Locations for Electrical Installations in Chemical Process Areas
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标准状态：现行
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更新日期：2011年10月26日
内容简介
NFPA 499-2004
Classification of Combustible Dusts and of Hazardous (Classified) Locations for
Electrical Installations in Chemical Process Areas
Classification of Combustible Dusts and of Hazardous (Classified) Locations for
Electrical Installations in Chemical Process Areas
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