DIN EN 62326-4-1-1997 印制电路板.第4部分:层间连接刚性多层印制电路板.分规范.第1节:性能详细规范.要求等级A,B和C
Printed boards - Part 4: Rigid multilayer printed boards with interlayer connections; sectional specification; section 1: Capability detail specification; performance levels A, B and C (IEC 62326-4-1:1996); German version EN 62326-4-1:1997