GUIDELINES FOR EVALUATING AND EXPERSSING THE UNCERTAINTY OF MEASUREMENT

In this paper a brief introduction to the“guide to the expression of uncertainty in measurement（ISO:1993E）” is made, including the introduction of the significance of the guideand the scope of its application, the definition and the fundemental ideas of the uncertainty ,the guidelines for evaluating and expressing the uncertainty of measurement for the purpose of propagating. Promoting its applcation