DIN EN 60893-1-2004 绝缘材料.电工用热固性树脂工业硬质层压片.第1部分:定义、名称和一般要求
Insulating materials - Industrial rigid laminated sheets based on thermosetting resins for electrical purposes - Part 1: Definitions, designations and general requirements (IEC 60893-1:2004); German version EN 60893-1:2004