DIN EN 12543-2:2021-06 無損檢測-無損檢測用工業(yè)X射線系統(tǒng)焦點特性-第2部分:針孔相機射線照相方法
Non-destructive testing - Characteristics of focal spots in industrial X-ray systems for use in non-destructive testing - Part 2: Pinhole camera radiographic method; German version EN 12543-2:2021