Adopting golpolze curve model to forecasting the sell trend of machine-production in market, and integrate date to apply, research indicate, using this model in forecasting sell saturation capability with upper precision.

By building up tumor growth aerodynamic model,when tumor growth aerodynamic laws is research to find: The process of tunor increasing squares with economic growth of Gompertz growth parabola description;we further study that Gompertz growth parabola squares with population growth and regulation of Logistic growth parabola description.