We use SD rigid ballisticequation and adopt the parameter differentiation to take the fitting calculation in the 18°angle ofdeparture and prove the new method of the production of howitzer firing table.

In this paper, the concepts of the abstract dynamic equation with first type and second type critical parameter are introduced in a Lebesgue space which consists of functions with vector valued in a general Banach space, and then describe the solution of these equations by virtue of operator semigroup.

Δu+u3=0,in Ω;u=0,on Ω,the method s efficiency has been improved based on search extension method and parameter differential method.

Komarof (relative intensity method, integral parameter method and differential parameter method), this paper deals emphatically with the results of computerized quantitative interpretation of apparent polarizability sounding curves obtained form theoretical calculation, digital simulation and physical simulation above spheroids, pla.