径向缺欠。径向缺欠可定义为其纵轴垂直于材料表面的任何缺欠。

Radial imperfection. A radial imperfection may be defined as any imperfection whose vertical axis is perpendicular to the material surface.

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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。

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.

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