surface calculate
2.By the help of geometric significance of plane or space curve and space surface, and by use of the symmetry of curve and surface to coordinate axis and coordinate surface, how to use the symmetry to calculate the surface integral and curve integral is discussed for the odd (even) functions that are defined on the curve or surface with symmetry.
4.Examine five day biochemical oxygen demand (BOD 5)of surface water needs 5 day time,analysis period more lenger In this paper,established straight line regression equation between BOD 5 and permanganate index(COD Mn )or BOD 5 and dissolved oxygen(DO) By determine COD Mn and DO for surface water,may respectively relized rapid calculate forecast for BOD 5 of surface water Useing dissolved oxygen meter examin DO at scene,may immediately forecast BOD 5 of surface water
5.The non-fully developed full-range sea spectrum(NDFSS)is reconstructed,and a fractal sea model based on NDFSS(NDFFM)is presented,witch is well applicable to the real sea surface. The two-scale method is used to calculate the backward radar cross section(BRCS)of the NDFFM sea surface,and the relationship between the model parameters and the BRCS is discussed in detail.
8.The inversion results of the theory model and actual data show that the method can reconstruct near-surface velocity field of complex structure stably, quickly and accurately, thus, can calculate the statics and ensure structural imaging in complex area.
