DIN EN 61391-2:2010 超声波学.脉冲回波扫描仪.第2部分:最大渗透深度和局部动态范围的测定(IEC 61391-2-2010).德文版本EN 61391-2-2010
Ultrasonics - Pulse-echo scanners - Part 2: Measurement of maximum depth of penetration and local dynamic range (IEC 61391-2:2010); German version EN 61391-2:2010