Pipe wall electrostatic effect is often produced in the pipe of air-solid phase pneumatic conveying.

气固两相流管道中常发生管壁静电效应。

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In comparison with traditional solid wall drain pipe, this kind of pipe is an energy-saving environmental protection type drain pipe for building.

这种管材与传统实壁排水管相比，不仅能有效地降低排水噪声，而且在排水排通能力方面也大为提高，是一种节能环保型建筑排水管材。

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