并且随着管径的增大，管道断面上管轴中心流速和管壁流速的差值将随之增大。
Besides, as the diameter increases, the velocity difference between pipeline axis and wall will become bigger accordingly.
圆形断面管道在工程中的应用十分广泛。
The pipelines with circular section are used widely in the practical engineering.
本文阐述了通直等断面主管道式通用型气力吸集装置的结构、工作原理、设计计算方法及使用特点。该系统适用于大型木材加工车间。
The article describes structure, working principle, design method and characteristics of general pneumatic dust collecting device with equal section main pipe for largescale wood processing mills.
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