Measurement and characterisation of ultrasonic fields using hydrophones in the frequency range 0.5 MHz to 15 MHz (IEC 61102:1991 + A1:1993); German version EN 61102:1993 + A1:1994
使用频率范围为0.5 MHz至15 MHz的水听器测量和表征超声场(IEC 61102-1991+A1-1993);德文版EN 61102:1993+A1:1994