

专家解读视频
Applies to medical diagnostic ultrasonic equipment. Itprovides a set of traceable acoustic parameters describingthe acoustic fields.
UNE EN 61157:1996 - Identical
SS EN 61157 Ed. 1 (1995) - Identical
NF EN 61157:1994 - Identical
I.S. EN 61157:1995 - Identical
BS EN 61157:2007 - Identical
DIN EN 61157 (1995-06) - Identical