[国外标准] BS EN 20286-2-1993 ISO system of limits and fits — Part 2 Tables of standard tolerance grades and li
[国外标准] BS EN 20286-1-1993 ISO system of limits and fits —Part 1 Bases of tolerances, deviations and fits
[航空标准] HB 20286-2016 基于模型的定义 机加件
[电子行业标准] SJ 20286-1993 半导体集成电路JT54LS74、JT54LS112、JT54LS174和JT54LS175型LS-TTL触发器详细规范