stock ground
1.By rolling test of paved permeable rock fill dam,the paper draws suitable rolling frequency,and rolling quality of dam is controlled by object method,analyses and compares material of building stones test in stock ground, combination of plant equipment, spreading thickness,rolling frequency, result of testing porosity experiment,controls quality strictly according to rolling parameter defined by experiment in construction,checks quality by object method.
6.After expounding the power supply and current collection modes of the rolling stock in Shanghai UMT Pearl Line in terms of technology and economy, the author argues that two current collection modes shall be adopted for Shanghai UMT Pearl Line, i.e. a third rail collector be on skybridge while the overhead contact line on the ground.
7.Through three years study on crop yield and above ground biomass at the regime of intercropping,it was demonstrated preliminarily that the crop yield increased gradualy,5. 0 ￣ 8. 0%, along with the growth of young poplar (2-4 years old)and was over 5. 0% than that of non-stock land;
