“电子元件”相关标准(四)

摘要

48 GB/T 4677．7-1984印制板镀层附着力试验方法胶带法 Test method of plating adhesion by adhesive type for printed boards 49 GB/T 4677．8-1984印制板镀涂覆层厚度测试方法β反向散射法 Test method of plating and coating thickness by beta backscattering for printed