EN 60893-3-4:2004 绝缘材料.电工用热固性树脂工业硬质层压片.第3-4部分:专用材料规范.对酚醛树脂硬质层压片的要求 IEC 60893-3-4-2003
Insulating materials - Industrial rigid laminated sheets based on thermosetting resins for electrical purposes Part 3-4: Specifications for individual materials - Requirements for rigid laminated sheets based on phenolic resins (Incorporates Amendment A1: