The WEC technology brings two parallel planes between substrate surface and circuit design surface of mask, which are provided for the stage for alignment.

Optimal tolerance allocation for composite dimensional and geometric tolerances;

Research on Key Techniques for Concurrent Design of Product Conceptual Structure and Geometric Tolerance;

Development of a geometric tolerance code tagging system based on the AutoCAD

Parameterized programming for form and position tolerances automatically;

A graphic method for determining form and position tolerance is presented based on the tolerance principle and deviation and tolerance theory.

Mathematical basis is provided to measure form and position tolerance of roller rim using coordinate value electrometry and microcomputer data processing.

A new method for determining form tolerances of combination sliding bearings on cone bits;

Form Tolerance Modeling and Error Evaluation Techniques Based on GPS;

It provides a way for correct understanding the ideal elements of form tolerance to be measured and the minimum necessary condition for the measurement Thus, correct and non defied valued measuring method is establishe

Brief analysis of how to reasonably select shape and position tolerances;

Influence of shape and position tolerance of dryers and rolls for paper machines

In this article,according to the relationship between dimension tolerance and shape and position tolerance which is difficultly understood while designing,especially the compensation of both sides,the writer does the further re.