The result and conclusion is:the cornerstone of sports survey reliability is Classical Test Theory;the defination of measuring:refiability is the compatibility and stability of the measure result;the definition formula r=1-s_E~2/S_x~2 only,has theoretical value,and may not be used to estimate the survey reliability generally;the most feasible meth.

The paper discusses the objects, the criteria , the contents, the method, and the data processing method of reliability test and presents, gives out the test results of key components of nuclear logging tools .

The research on reliability test instrument of step motor with work stability, test precision and operate easily, including software and hardware based on P89C662, was described.

On the basis of stating the characteristics of the software reliability test and the ele-ments affecting the software reliability, this thesis raises the rule of the testing thoroughness for soft-ware reliability.

Example analysis shows that reliability prediction theory of the paper fairly well resolves the problem of complex robot system of reliability prediction,and that the calculated results are basically in conformity with the practical statistics results.

By aggregate analysis of reliability of gun in the design stage, a method and a model of reliability prediction is given for the complex structure and multiple failure mold parts.

Comparison with the result of grey serial forecast was made, and the feasibility was proved that artifical neural network can be used for reliability prediction.