JB/T 6220-1992 射线探伤用黑度计

无损检测仪器 射线探伤用密度计
Non-destructive testing instruments. The densimeter for radiography

2011-12-20

Standard Guide to Obtainable ASTM Equivalent Penetrameter Sensitivity for Film Radiography of Steel Plates 14 to 2 in. (6 to 51 mm) Thick with X-Rays and 1 to 6 in. (25 to 152 mm) Thick with Cobalt-60
钢板胶片射线照相用可获得ASTM等效透度计灵敏度的标准指南(6至51毫米）厚 带X射线和1至6英寸厚(25至152 mm）厚 含钴-60

2020-06-01