Printed boards and printed board assemblies - Design and use - Part 7: Electronic component zero orientation for CAD library construction (IEC 61188-7:2017); German version EN 61188-7:2017
印制板和印制板组件.设计和使用.第7部分:CAD库构造用电子元件零定向(IEC 61188-7-2017);德文版EN 61188-7:2017