IEC 61828:2020 超声学 - 换能器 - 关于发射场聚焦的定义和测量方法 Ultrasonics - Transducers - Definitions and measurement methods regarding focusing for the transmitted fields 标准号:IEC 61828:2020 发布日期:2020-12-15
IEC 61828:2020
IEC 61828:2020 超声学 - 换能器 - 关于发射场聚焦的定义和测量方法 Ultrasonics - Transducers - Definitions and measurement methods regarding focusing for the transmitted fields 标准号:IEC 61828:2020 发布日期:2020-12-15
IEC 61828:2020