antecedent precipitation वाक्य

Antecedent precipitation index
The statistics show that the correlation of antecedent precipitation , lithology , landform , drainage density , drainage area , length and ratio of demotion of main river and four characteristics of low flow is very complex
The factors include antecedent precipitation of low flow period and status of karst basins ( such as lithology , landform , drainage area , drainage density , length and ratio of demotion of main river and so on . ) . based on the former studies , integrated the conventional statistic methods , the technique of anns is applied in this paper for researching the law of the low flow of karst basins in guizhou altiplano