GB/T 16540-1996 in English

《GB/T 16540-1996声学 在0.5～15 MHz频率范围内的超声场特性及其测量水听器法》由TC17（全国声学标准化技术委员会）归口，主管部门为中国科学院。
本标准规定了0.5～15MHz频率范围内在水和其他液体中的超声场的各种声参数的定义，以及使用已校准的压电水听器测量医用超声设备在水中所产生的超声场参数的条件和方法。

Scope

This standard specifies the definition of various acoustic parameters of the ultrasonic field in water and other liquids within the frequency range of 0.5 to 15 MHz, and the conditions for using calibrated piezoelectric hydrophones to measure the ultrasonic field parameters generated by medical ultrasonic equipment in water and methods. Note: This standard uses SI units. In the specification of some parameters, such as beam area parameters and sound intensity parameters, it may be more convenient to use other units. For example, the sound beam area can be used in cm², and the sound intensity can be used in W/cm² or mW/cm².