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A kind of washboard - like crack on steel plate surface is introduced.
文章介绍钢板表面产生的一种搓板状裂纹。
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Smooth flat plate surface, greatly reducing the dust and dirt accumulation.
板面平直光滑，大大减少了灰尘污垢积聚。
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Smooth flat plate surface, greatly reducing the dust and dirt accumulation.
板面平直光滑，大大减少了灰尘污垢积聚。
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