ASTM E 592-1999 用X射线法作1/4至2英寸(6-51mm)厚钢板...
E592-99 Standard Guide to Obtainable ASTM Equivalent Penetrameter Sensitivity for Radiography of Steel Plates 1/4 to 2 in. (6 to 51 mm) Thick with X Rays and 1 to 6 in. (25 to 152 mm) Thick with Cobalt-60
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