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现行 UNE 20552:1975
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DESIGN AND USE OF COMPONENTS INTENTED FOR MOUNTING ON BOARD WITH WIRING AND PRINTED CIRCUITS 设计和使用拟安装在带有布线和印刷电路板上的组件
发布日期: 1975-06-15
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发布单位或类别: 西班牙-西班牙标准
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印制板和印制板组件.设计和使用.第6-4部分:接地图案设计.从接地图案设计的角度看表面安装组件(SMD)尺寸图的一般要求(IEC 61188-6-4-2019);德文版EN IEC 61188-6-4:2019
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