The continuum modeling approach to transportation models is now gaining much attention because of its advantages in dealing with dense-network models, macroscopic problems, and initial phase planning.

由于在模拟密集网络、宏观问题和方案阶段中的优势，连续性模拟方法应用到交通模型的模拟中，正在得到越来越多的关注。

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Based on the experimental results and analysis, the idea and principle about design of standpipe shape and dense-phase transportation of catalyst in the standpipe were presented.

根据实验结果及分析，对垂直立管的管形设计和催化剂在垂直立管中的密相输送提出了分析与建议。

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It is suitable for dense phase pneumatic transportation, and for dilute density pneumatic conveying as well.

该泵不仅适用于高浓度气力输送，也适用于稀相气力输送。

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