accumulative flow method的用法和样例：
- When accumulative flow method was used to model water quality or dynamics of river with dams,field velocity data should be available to calculate accumulated flow curve of various cross sections.
- Improved optical flow method and its application in the study on FAE[J].
- According to Newton-Raphson(NR) method, a new power flow method based on reliable power flow technique is proposed.
- Costs and returns for orchards at the above densities were examined by the cash flow method of analysis.