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1. Understand and grasp the characteristic equation for gas steady flow.

2. Characteristic equation of a rectangular plate is derived based on its potential energy functional.

3. For a thin-walled bar with openings, a characteristic equation of lateral stability is derived from energy principle and with the aid of variational method.

4. The characteristic equation of calculating the thaw bulb was drawn by mathematical simplification, and a satisfied solution was obtained by difference method.

5. The new method turned the volt-ampere characteristic equation of transmission lines into an integral form, then used least square method to solve the equations and got the zero-sequence parameters.

6. Firstly, based on the characteristic equation and angular momentum conservation equation of the FFSR, the generalized Jacobian matrix is obtained.

7. Using the root of the characteristic equation, this paper studies the asymptotic solution of the characteristic equation of the open circular cylindrical thin shells.

8. Another very useful graphical technique deals directly with the roots of the characteristic equation. This second method is called the root locus method.

9. The parameter identification of joining stiffness of rudder hydraulic servo mechanism can be done by using the direct method of characteristic equation anti problem.

10. The stiffness matrix corrected by the method not only satisfies the characteristic equation, but also is the unique symmetric positive semidefinite matrix.

11. According to the boundary condition of the actual rectangular plates, it is very easy to get the characteristic equation for the problem through the boundary value of the generalized solution.

12. This method utilizes a transfer matrix technique to obtain an analytical characteristic equation of the system, on which the dynamic frequency tuning is based.

13. This paper considered a second-order neutral equation with several days, and proved that the equation was oscillatory if and only if its characteristic equation had no real root.

14. The impulse response method is adopted to identify the modal parameters, and the physical parameters are estimated from the characteristic equation of the mathematical model built.

15. In this paper, a predator-prey model with time delay is investigated. The local stability of a positive equilibrium is discussed by analyzing the corresponding characteristic equation .

16. Based on the analysis of characteristics of explosive field formed by FAE , characteristic equation is fitted with trial data.

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17. This paper discussed the dependence of the characteristic value of characteristic equation on frequency for the given precise characteristic equations of plasma cylindrical waveguides.

18. The Hurwitz criterion is another method for determining whether all the roots of the characteristic equation of a continuous system have negative real parts.

19. Based on the analysis of characteristics of explosive field formed by FAE , characteristic equation is fitted with trial data. Then the range of casualty ranking of FAE is deduced (the power range).

20. Contraposirig the effect of materials capability, the conception of the characteristic equation and eigenvalue of relative cone radius are put forward.

21. A calculating formula for rotational speed derives from movement characteristic equation of one bank planet gear mechanism.

22. By making a comparable analysis between the three types of corn drills and manual dibbling, we have established the critical characteristic equation the cri...

23. Methods of using the D-decomposition curves to judge whether all the roots of the characteristic equation possess a negative real part are also discussed.