Bottom of the defect.

锅底的缺陷。

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In that year "a defect at the dam opened the gates, making a toxic layer of hard metals deposited at the bottom of the river come up" to the surface, she said.

就是那年，大坝的门户错误的打开，使得那些原本位于河流底部的有毒重金属层浮到了表面，她继续说道。

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Taking a defect example that manhole is close to vertical welding this article introduces how to treat the defect in replacement of partial bottom wall.

以罐壁开孔距纵向焊缝过近缺陷的处理为例，介绍底圈局部壁板的更换方法。

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