DIN EN 61391-1:2007 超音波学.脉冲回波扫描仪.第1部分:校准空间测量系统和系统点传播功能响应测量
Ultrasonics - Pulse-echo scanners - Part 1: Techniques for calibrating spatial measurement systems and measurement of system point-spread function response (IEC 61391-1:2006); German version EN 61391-1:2006