DIN EN 60061-1-2013 灯头和灯座以及可换性和安全性控制量规.第1部分:灯头(IEC 60061-1-1969+补充件A-1970至V-1997+A21-1998至A47-2011+A48-2012,修订本).德文版本EN 60061-1-1993+A1-1995至A7-1997+A21-1998至A47-2012+A48-2012
Lamp caps and holders together with gauges for the control of interchangeability and safety - Part 1: Lamp caps (IEC 60061-1:1969 + supplements A:1970 to V:1997 + A21:1998 to A47:2011 + A48:2012, modified); German version EN 60061-1:1993 + A1:1995 to A7:1