标准摘要
[中文适用范围]： 本标准规定了超声波仪器调整用钢制阶梯楔块标准块的尺寸、材料和制造的要求。 [外文原描述]： This document specifies the requirements for the dimensions, material, and manufacture of a steel step wedge standard block for the setting of an ultrasonic instrument.
英文名称Non-destructive testing — Ultrasonic testing — Specification for a step wedge standard block