本文简述液体分布器的结构和特点，设置百叶窗式液体收集再分布装置的的必要性，介绍了在苯胺精馏塔上的应。
The structure and characteristics of the liquid distributors as well as the necessity of installing the butter liquid re-distributor were described in this article.
首先介绍了GPRS的技术特点，然后分析了系统的总体结构，再分别从系统的硬件设计和软件设计两方面介绍了该系统的具体实现方法。
Firstly describes features of GPRS technology, secondly analyzes the total structure of this system, finally expounds the realization of the system from hard design and software design.
人口的空间结构状况趋于不均衡化，人口再分布活力明显下降；
The spatial distribution of population tended to imbalance, and the redistribution index declined obviously.
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