第八讲尺寸公差与配合的注法(GB 4458.5-84)1.新标准中尺寸公差的代号与原标准的代号有什么不同?原标准中公差配合的代号是用汉语拼音的字首作为公差配合的代号,新标准等效采用了国际标准ISO 406-1982《技术制图—线性和角度公差在图样上的注法》,其标注代号与国际公差制的代号一致,也与我国国家标准 Lecture 8 Dimension Tolerance and Matching Notes (GB 4458.5-84) 1. The new standard size tolerance code and the original standard code What is the difference? The original standard tolerance code with the Chinese pinyin prefix as a tolerance With the code, the new standard equivalent to the use of international standards ISO 406-1982 “technical drawings - linear and angular tolerance in the design of the Note,” the code and international tolerance code of the same code, but also with our national standards