美利体育登录入口官网:BS EN 61220:1995
超声波学.场.频率范围0.5MHz-15MHz超声波医疗美利体育官网首页网址含水听诊器引起的超声场的特性和测量指南
Ultrasonics - Fields - Guidance for the measurement and characterization of ultrasonic fields generated by medical ultrasonic equipment using hydrophones in the frequency range 0.5 MHz to 15 MHz