CEI EN 60641-3-2 Ed. 2 (2010)現行
Specification For Pressboard And Presspaper For Electrical Purposes - Part 3: Specifications For Individual Materials - Sheet 2: Requirements For Presspaper, Types P.2.1, P.4.1, P.4.2, P.4.3 And P.6.1
出版：Comitato Elettrotecnico Italiano
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