UNE-EN IEC 63009:2019 Ultrasonics - Physiotherapy systems - Field specifications and methods of measurement in the frequency range 20 kHz to 500 kHz (Endorsed by Asociación Española de Normalización in November of 2019.)
2019UNE-EN IEC 63009:2019 Ultrasonics - Physiotherapy systems - Field specifications and methods of measurement in the frequency range 20 kHz to 500 kHz (Endorsed by Asociación Española de Normalización in November of 2019.)