ChinaAutoRegs｜GB/T 1800.2-2020英文版翻译 产品几何技术规范（GPS）线性尺寸公差ISO代号体系 第2部分：标准公差带代号和孔、轴的极限偏差表
Geometrical Product Specifications (GPS)—ISO Code System for Tolerances on Linear Sizes—Part 2: Tables of Standard Tolerance Classes and Limit Deviations for Holes and Shafts

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