Applying the theories on quasi-classical particles and the uncertainty relation of quantum mechanics,we deduce the formula of energy uncertainty with electric field and energy analytic expression of 2DEG(two-dimensional electron gas) in the parabolic well and its energy width.

By introducing the characteristic of new technologies about bubbling atomizing small oil gun, direct firing parabola burners of pulverized coal,large size duff store\|house, the author shows the application foreground and advantage of technique and economy about these new technology on old 125 MW,200 MW set in the new electrovalency policy.

The difference between catenary model and parabola model and its influences on the design of ADSS;

The results explain the consistency and difference between the whole growth period of crop moisture parabola model and Jensen′s model of crop growth stages of water in theory,these can provide a reference for optimum distribution about flow of water of irrigation and drainage.

Based on the testing results in laboratory, the stress strain responses of the eco material are simulated by the hyperbolic and parabolic models, and the testing parameters of models are given.

The stress-strain relationships of different forest root systems above are simulated by the hyperbolic and parabolic models,and the testing parameters of models are given.

, the linear model, parabolic model and growth curve model are constructed using the trend extrapolation.