DIN EN IEC 63296-1 E:2020 文件草案 便携式多媒体设备 电池持续时间的确定 第1部分:有源扬声器设备 (IEC 100/3465/CD:2020) 文本为德语和英语
Draft Document - Portable multimedia equipment - Determination of battery duration - Part 1: Powered loudspeaker equipment (IEC 100/3465/CD:2020); Text in German and English