GA305-2001 电气安装用阻燃PVC塑料平导管通用技术条件.pdf
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General specifications of plain conduits of
flame-retardant PVC plastics for electrical installations
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3.1 µçÆø°²×°ÓÃ×èȼPVCƽµ¼¹Ü plain conduits of flame-retardant PVC plastics
for electrical installations
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GA305-2001 电气安装用阻燃PVC塑料平导管通用技术条件.pdf
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