The basic principle of movement of circulation founds and the limitations of estimation methods of circulation fund in agriculture projects were present.

从流动资金周转运动的基本原理入手，分析了现行的流动资金估算方法对农业项目的不适应性。

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This paper overviewed three basic projects of the oil spirit recovery, emphasized the work principle, method that introduced the adoption appropriation equipments.

本文综述了油气回收的三个基本方案，着重介绍了采用专用设备的工作原理、方法。

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