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。
The width of the wake is larger and the base pressure of the plate is lower in comparison with the fully turbulent wake behind a smooth flat plate at the same flow conditions.
与在相同流动条件下光滑平板后的湍流尾流比较，涡街尾流较宽，平板底部压力较小。
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