参考试块 meaning in Chinese

reference block
reference test piece
referenceblock

Ultrasonic non - destructive testing - reference blocks and test procedures for the characterization of contact search unit beam profiles
无损检测超声检验测量接触探头声束特性的参考试块和方法
The question of ultra - sonic inspection on weld defect detecting of net frame spherical shape contact point is introduced in this paper , the detected rate of weld defect of net frame spherical shape contact point was significantly increased by improving the ultra - sonic exploring block , ultrasonic sensitivity special standard reference block and reference block , and ultra - sonic inspection process method
摘要介绍了超声波探伤技术在检测网架球接点焊缝缺陷中存在的问题；通过对超声波探头、灵敏度专用标准当量试块和参考试块以及超声波探伤工艺等的改进，提高了球接点网架焊缝缺陷的检出率。