Dust accumulation of more than 0.8 millimeters - covering at least 5 percent of a room's surface poses a significant explosion hazard.
粉尘沉积超过0.8毫米，覆盖房间表面达5%或以上时，会有重大的爆炸隐患。
Its closed design smooth surface and rounded corners prevent dust accumulation and facilitate cleaning.
它紧凑的设计，光滑的外表和圆角避免的了灰尘堆积并且更加容易清洗。
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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