Based on the theory of uncertainty,analyzed the relationship between various uncertainty,then emphatically discussed the key links such as contributing factors,evaluation models and evaluation relationship in Procedure for Uncertainty Management(PUMA).

On the basis of measurement uncertainty mode of PUMA,this paper studied and probed the two important key technology that involve in the developing of the measurement uncertainty management tool.

In the method,measure project programming with PUMA,measure data postpositively processing based on New Generation GPS,process of arithmetic operators represented by Ordered Trees,automatic customization of measure process with automatization driving algorithm,and arithmetic operators library supporting for the algorithm are all carried out.

Analysis of the Uncertainty for the Determination of Trace Nickel in TG6 Titanium Alloy by AAS;

The Application to Uncertainty Analysis of Microwave Power Measurement with Monte Carlo Method;

Uncertainty of Straightness Error Assessment with Minimum Condition;

Evaluating method of uncertainty in measurement about composite error of electric energy at the power exchange point;

Evaluation of Uncertainty in Measurement for Indicating Error of Three-phase Electrical Energy Meters with Electronics;

This paper analyzed and assessed for the uncertainty in measurement result, branch and description of the for the rice moisture, and also compiled relevant calculating procedure, The reseach made some beneficial attempt in the modeling and component calculating , the assessment and calculating of synthesis standard uncertainty and expansion uncertainty.