摘自ASME Y14.5M-1994 / Z( j! e& G& C- }+ u1.3.22 Regardless of Feature Size (RFS):The term used to indicate that a geometric tolerance or datum reference applies 8 W* A* ? @3 E. Rat any increment of size of the feature within its size tolerance.! T8 ^- J) d% K' k4 _5 Y
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论坛里有中文版的解释http://www.3dportal.cn/discuz/viewthread.php?tid=119393&highlight=Y14.5M# v. g$ n$ A$ Y; {: y