This paper concludes the harmfulnees of harmonic, analyses the harmonic taken by the nonlinear load of microcomputer, deduces that the current of neutral line is bigger than the phase electric current even if the triphase load is balanced entirely, and confirms the permission value without exceeding standard and the proportional of the nonlibear load.

This paper introduces threshold nonlinearity into RMB to investigate the relationship between real exchange rate and real interest differentials.

Practice proves that the method presented in this paper overcomes impact of the non-linear and temperature error of strain gauges .

Following the geometrically nonlinear deformation theory,we use the finite element method to discretize a flexible beam that is undergoing large-scope motion,with the influence of the nonlinearity of its bending and twisting on its longitudinal,lateral and transversal deformations taken into account.

Furthermore, the experiment result of the relation between the load and the bending defection shows the nonlinear deformation regularity of the reinforced con.

According to the geometrically nonlinear deformation of a flexible beam and continuum medium mechanics,for a planar flexible beam under large overall motions,a rather precise deformation model with the influence of nonlinear factors on horizontal deformation taken into consideration was derived.