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前言 《公差原则》国家标准(GB4249—84)是继《公差与配合》国家标准(GB1800～1804—79)、《形状和位置公差》国家标准(GB1182～1184—80、GB1958—80)之后,由全国公差与配合标准化技术委员会和全国形状和位置公差标准化技术委员会共同制定、经原国家标准局批准发布的又一项重要基础标准。它不仅是确定形状、位置和尺寸公差之间相互关系的准则;而且是设计者
Preface “Tolerance principle” national standard (GB4249-84) is following the “tolerance and cooperation” national standards (GB1800 ~ 1804-79), “shape and location tolerances” national standards (GB1182 ~ 1184-80, GB1958-80) By the National Tolerance and Standardization Technical Committee and the National Coordination of shape and position tolerance standardization jointly developed by the former National Standards Bureau approved the release of another important basis for the standard. It is not only a guideline for determining the relationship between shape, position and dimensional tolerances; it is also the designer