The plate model can be used to conduct modal fatigue tests of the cylindrical shell and precisely predict its fatigue life under correct loading conditions.

This paper discusses the irrigation effect on the NO_3~- -N distribution and motivation in the aerated Loess Plateau, ascertain the relationship between irrigation and nitrogen leaching, and precisely predict the polluted condition of soil and groundwater.

In order to precisely predict the generating conditions of hydrate, this essay made the comparison among the available predictive models and state equations, and selected the Chen&Guo model as the basic model for the prediction.

Nevertheless, the proposed constitutive model cannot only precisely predict the forward and reverse transformation, but can also characterize the stress-strain hysteresis behavior during pseudoelastic deformation under uniaxial tension loading.

Thus at present, neither soil nor plant analysis can be recommended to precisely predict the growth of plants on high soil B.

Even with temperaturecorrection, we failed to precisely predict PēCO2 fromPconCO2.

The present results showed that the Jaccard's similarity coefficients based on RAPD data cannot be used to precisely predict the F1 hybrids yield performance and heterosis value.

We can precisely predict the future dynamics of populations only if we know the underlying mechanism of population dynamics.

For orbit improvement, a extended Kalman filter has been suggested in this paper. Processing in real time a few passes of laser ranging observation data from only one tracking station, the satellite position in current future could be precisely predicted. The dynamical model included the effects of the earth non-spherical shape, atmospheric drag, solar radiation pressure as well as lunar and solar perturbations. In computing these kinds of perturbations, the earth gravitational potential was developed...

For orbit improvement, a extended Kalman filter has been suggested in this paper. Processing in real time a few passes of laser ranging observation data from only one tracking station, the satellite position in current future could be precisely predicted. The dynamical model included the effects of the earth non-spherical shape, atmospheric drag, solar radiation pressure as well as lunar and solar perturbations. In computing these kinds of perturbations, the earth gravitational potential was developed up to llth degree and 11th order for all of zonal, sectorial and tesseral harmonic terms; exponential model was adopted for the distribution of atmospheric density; the earth shadow was assumed in cylindrical shape; the rotating Kepler's elliptical orbits were adopted in computing the geocentric coordinates of the moon and the sun. For the estimation of satellite state, the extended sequential estimation algorithm was applied. The numerical method was used to integrate state vector and error covariance matrix. As the tests, two examples using simulated and real laser ranging data of LAGEOS satellite respectively were presented. The applications demonstrate that the rather accurate satellite position of subsequent passes required for laser pointing could be predicted, by using the extended sequential filter structured in here and processing a few passes, a relatively small number of range observation data, even though these data were from only one station. Whatever, more passes were processed, more accuracy could be reached. The computer program constructed according to this method is able to run on a minicomputer, such as PDP 11/60, while at the same time, it maintains the required accuracy for orbit prediction. So the extended Kalman filter is a convenient and useful means for those tracking stations, where no large computers are available.

Precise control of chemical composition and uniform distribution of alloying elements are the requirements to obtain final products in high quality, Up to now, the problem of how to effectively control the changes in chemical composition and the redistribution of alloying elements during the remelting process is still not well resolved. The general problems introduced into the modelling of ESR chemical reac tions by virtue of the various reactions stoichiomctries are discussed. In particular it is described...

Precise control of chemical composition and uniform distribution of alloying elements are the requirements to obtain final products in high quality, Up to now, the problem of how to effectively control the changes in chemical composition and the redistribution of alloying elements during the remelting process is still not well resolved. The general problems introduced into the modelling of ESR chemical reac tions by virtue of the various reactions stoichiomctries are discussed. In particular it is described the difficulties in using simplified reaction schemes such as the Mn/FeO/Fe/MnO exchange as the basis for modelling systems in which as many as eight separate reactions may require simultaneous equilibrium solutions. Based upon the penetration and film theories, a scheme of describing such systems is developed. The new model, theoretically, may be applied to any ESR system, i. e. to the ESR process of any steels and alloys, and the changes in composition of both metal and slag phases may be more precisely predicted. The theoretical model has been solved. The parameters for the model are discussed and determined.

The radioactiue isotope 85 Kr can be stably incarporated into a wide variety ofsolids to form so-called “Kryptonates”.The unusual thermal property of“Kryptonates”giues rise to a unique nondestruc-tive method for determining surface temperature which is difficult to be measuredby means of thermocauples,optical pyrometers,thermally sensitive paints or change inhardness.By using this technique,parameters in design,lubrication and cooling can be adju-sted and optimized,which are difficult to be precisely predicted...

The radioactiue isotope 85 Kr can be stably incarporated into a wide variety ofsolids to form so-called “Kryptonates”.The unusual thermal property of“Kryptonates”giues rise to a unique nondestruc-tive method for determining surface temperature which is difficult to be measuredby means of thermocauples,optical pyrometers,thermally sensitive paints or change inhardness.By using this technique,parameters in design,lubrication and cooling can be adju-sted and optimized,which are difficult to be precisely predicted in theory.