EN 60674-3-4 TO 6:1995 电工用塑料薄膜规范.第3部分:单项材料规范表4至6:电绝缘用聚酰亚胺薄膜要求(IEC 674-4至6-1993)
Specification for Plastic Films for Electrical Purposes Part 3: Specifications for Individual Materials Sheets 4 to 6: Requirements for Polyimide Films Used for Electrical Insulation