1. This paper firstly deduces the recurrence formula of plastoelastic structure dynamic analysis.

2. The recurrence formula of the permutation numbers of the players of then person game is also deduced.

3. MethodsThe finite different method in the form of recurrence formula.

4. In this paper we introduce an integral recurrence formula for calculating polynomial of powers sum, and gives its a primary proof and some applications.

5. It's structure is given by the recurrence formula, which is simple and strong practicality.

6. Then, the recurrence formula of viscoelastic integral relaxation constitutive relation is educed and applied to the program.

7. From recurrence formula is derived the formulation of determining the number and location of pressure-release pond.

8. A recurrence formula for calculating the displacement and the velocity is derived by combining the theorem of impulse with the method of discretized similarity.

9. The output of the filter is obtained by recurrence formula.

10. This paper put forward the recurrence formula for radial average values of three-dimensional line potential central field.

11. In which the recurrence formula and some examples is given.

12. The recurrence formula for beam transform in bending was deduced.

13. This paper derives the recurrence formula of the node voltage equation.

14. The transfer matrix and recurrence formula of broad-sense original parameter are derived. An example is calculated and also discussed.

15. The recurrence formula for radial martrix elements of two-dimensional isotropic harmonic oscillator are derived.

16. A recurrence formula for computing water depth at vena contraction is derived from the basic equation of water depth at vena contraction in rectangular channels.

16. try its best to gather and create good sentences.

17. In part II, we consider the recurrence formula of double hypergeometric terms.

18. A method for calculating the interlobe sealing line with ordered corresponding points and a recurrence formula are proposed.

19. Based on the propagation theory of seismic wave in one dimensional layered medium this paper gives the recurrence formula of such a propagation.

20. The basic principle of this method is introduced, the recurrence formula for the tangent of secants is deduced and the flow chart of the correspondent program is presented.