而通过有效地控制转捩起点、转捩区长度就可以有效改善流动效率。
The flow efficiency can be effectively improved by controlling the start point and the length of transition area.
流动效率影响因素依次为：压实带中渗透率下降程度、压实带厚度。
The factors that influence core flow efficiency are flow permeability decrease in crushed zone and the thickness of crushed zone.
它不仅提供良好的过滤效率，具有良好的灰尘负载宽容使优越的空气流动效率。
Not only does it provide good filtering efficiency, it has a good dust load up tolerance which enables superior air flow efficiency.
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