DIN EN 61157-2013
医疗诊断超声波设备的声学输出报告的标准平均值(IEC 61157-2007+A1-2013).德文版本EN 61157-2007+A1-2013
Standard means for the reporting of the acoustic output of medical diagnostic ultrasonic equipment (IEC 61157:2007 + A1:2013); German version EN 61157:2007 + A1:2013