标准名称：NFPA 497-2008 Recommended Practice for the Classification of Flammable Liquids, Gases, or Vapors and of Hazardous (Classified) Locations for Electrical Installations in Chemical Process Areas
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更新日期：2011年10月26日
内容简介
NFPA 497-2008
Recommended Practice for the Classification of Flammable Liquids, Gases, or Vapors
and of Hazardous (Classified) Locations for Electrical Installations in Chemical Process
Areas
Recommended Practice for the Classification of Flammable Liquids, Gases, or Vapors
and of Hazardous (Classified) Locations for Electrical Installations in Chemical Process
Areas
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