Rayleigh equation

It combines "crocodile coefficient" with Willey formula to correlate the development degree of the fractures in different blocks.

分析了储层天然裂缝和人工裂缝对新肇油田注水开发的影响;将“龟裂系数”和威利公式相结合,对油田不同区块裂缝的发育程度进行对比;根据注水压力的变化,研究了裂缝的开启过程及开启压力;通过线性注水试验,确定了比较适合裂缝发育方向单一油田的合理注采井网。

It uses GM(1,1) model,compound interest formula and BP artifical neural network model to make macroscopic forecasting of forest growing-stock respectively on the basis of management inventory data of forest resources of Sanming,Fujian Province.

以福建省三明市森林资源二类调查资料为基础数据,采用VB编程语言,自主开发了森林资源蓄积量预测系统,用GM(1,1)模型、复利公式和BP人工神经网络模型分别对森林资源蓄积量进行宏观预测。

This paper introduces a simple method,that is,using compound interest formulae in connection with cash flow chart,which can simplify many complicated technical and economic evaluations on engineering projects.

复利公式在工程项目的技术经济评价中运用广泛 ,但是在实践中却较难把握。