标准摘要
[中文适用范围]： 修订引言第 3.7 至 3.10、8.1.5，添加新定义 3.62（带宽）、3.63（脉冲波束宽度）、3.64（脉冲波束半径）和新第 5.5 款（圆柱形或球形有源传感器的要求）元素），替换 [外文原描述]： Defines alternative procedures for the measurement of acoustic pressure and derived intensity parameters for the sound fields generated by single ultrasonic transducers which have cylindrical or spherical active elements and defines additional acoustical terms.
英文名称Amendment 1 - Measurement and characterisation of ultrasonic fields using hydrophones in the frequency range 0.5 MHz to 15 MHz