Imperfection. A discontinuity in the product wall or on the product surface that can be detected by the inspection methods contained in this SOP manual.
缺欠。可用本标准操作规程手册中所述检验方法检验的产品壁面或表面不连续性。
2
Non-radial Imperfection. A non-radial imperfection may be defined as any imperfection whose vertical axis is not perpendicular (it's at an angle) to the material surface.
非径向缺欠。非径向缺欠可定义为其纵轴不垂直于（存在一个角度）材料表面的任何缺欠。
3
Radial imperfection. A radial imperfection may be defined as any imperfection whose vertical axis is perpendicular to the material surface.