范围本标准规定了超声探头的某些性能和探头声场的测试方法。本标准的目的在于建立统一的测试方法 ,以形成一个评估基础 ,对在不同实验室和不同时期的测定结果进行评估 ,本标准没有规定探头的验收标准。但为采用本标准的各方规定验收标准奠定了技术基础。国际标准ＩＳＯ 2 4 0 Scope This standard specifies some of the properties of the ultrasonic probe and probe sound field test method. The purpose of this standard is to establish a unified test method to form a basis for evaluation, in different laboratories and different periods of the measurement results are evaluated, this standard does not provide for the acceptance criteria of the probe. But for the adoption of this standard stipulates the acceptance criteria laid the technical foundation. International Standard ISO 2 4 0