摘自ASME Y14.5M-1994- f: ]; t* _6 i& j3 E2 l A) Y* V( f
1.3.22 Regardless of Feature Size (RFS):The term used to indicate that a geometric tolerance or datum reference applies * q3 E$ o- h* e! x2 x
at any increment of size of the feature within its size tolerance.+ y2 \% a `5 e$ _/ z9 B6 M- a
$ G/ `8 [' | Q
论坛里有中文版的解释http://www.3dportal.cn/discuz/viewthread.php?tid=119393&highlight=Y14.5M0 _+ _$ g g, t! S1 k' _