标准摘要
[中文适用范围]： This document specifies the requirements for the dimensions, material and manufacture of a steel block for setting, checking and verification of ultrasonic test equipment used in manual testing. [外文原描述]： This document specifies the requirements for the dimensions, material and manufacture of a steel block for setting, checking and verification of ultrasonic test equipment used in manual testing.
英文名称Non-destructive testing — Ultrasonic testing — Specification for standard block No. 1