本文从应用需求角度出发，结合天气预报分析现状，对在天气变化中扮演重要角色的“槽线”进行了分析探讨。
The thesis discusses the trough line, which takes an important role in synoptic system on the base of describing the application requirement and present situation of forecast analysis.
而库存管理则是供应链管理中非常重要的环节，本文就是从库存周期和顾客需求角度出发对库存管理进行了探讨。
The inventory management is the important part of supply chain management. This paper conducts some study and discussion in the aspect of demand and inventory cycle time.
本文从读者的文献需求角度出发，提出并构建了读者需求信息收集网络系统，以期对提高文献采访质量工作提供帮。
From the aspect of readers document requirement, the paper raises and constructs readers requirement information collecting network system to offer help to improve document acquisitions quality.
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