We divided the P-M equation to two parts such as radiation item(ET(rad)) and aerodynamics(ET(aero)),and acquired the modified P-M equation for calculation of reference crop evapotranspiration in solar-heated greenhouse,and resolved some question when supposed wind speed equals to zero.

Applying SEBAL model and P-M Equation to estimate land-surface evapotranspiration over lower reaches of Wuyu'er River

For this article, considering shortage of land resource, deduces a modified formula about economical transportation distance, and apply for dispenses of Han-Xiao High way, so a good conclusion is available.

A FORTRAN program for CFST arch with dumbbell-shaped section has been developed,and the numerical example shows that the steel tubes and core concretes bear mainly the axial forces with small moments,thus,a modified formula for lattice column method to calculate axial forces of the upper and lower limbs of CFST with dumbbell-shaped section is deduced.

The data in nonlinear area are curve fitted first and then a simple correction formula is educed.

Secondly,a correction formula is deduced based on Spangler model.

A correction formula for measured time spectrum is presented.

By analyzing the influence of the out-size granule in geo-compactness on the maximal dry density,some measures for disposal of out-size granule in practice are presented,which proved the scientisticness and rationality of the corrected formula for this problem in"Test Methods of Soils for Highway Engineering".

This paper applies diffraction theory, has given the corrected formula of the resolving power of actual grating system.