A field experiment was conducted to study the influence of black fluid-film mulched covered winter wheat in dry land on soil microhabitats and yield.
采用田间小区试验研究了黑色液膜覆盖旱地冬小麦对土壤微生境及产量的影响。
2
Based on the free boundary theory and the variational method, a fast and accurate model for the calculation of the fluid-film forces under the Renolds boundary condition is presented.
The results of calculation indicates that the static axial stiffness of fluidfilm in double spiral groove face seal is improved due to the pressure loss through feeding holes.