实验管段部分可拆卸，以实现对常见管材不同管径的减阻效果研究。
Parts of the pipes are dismountable so that we could investigate the drag-reduction effect of different pipe diameters.
实验管段部分可拆卸，以实现对常见管材不同管径的减阻效果研究。
Parts of the pipes are dismountable so that we could investigate the drag-reduction effect of different pipe diameters.
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