IEC TR 60668:1980 面板安装和机架安装的工业过程测量与控制仪器的面板区域和开孔尺寸 Dimensions of panel areas and cut-outs for panel and rack-mounted industrial-process measurement and control instruments 标准号：IEC TR 60668:1980 发布日期：1980-01-01
IEC TR 60668:1980
IEC TR 60668:1980 面板安装和机架安装的工业过程测量与控制仪器的面板区域和开孔尺寸 Dimensions of panel areas and cut-outs for panel and rack-mounted industrial-process measurement and control instruments 标准号：IEC TR 60668:1980 发布日期：1980-01-01
IEC TR 60668:1980