摘自ASME Y14.5M-1994 8 K: {8 K8 P3 X8 n) b1.3.22 Regardless of Feature Size (RFS):The term used to indicate that a geometric tolerance or datum reference applies K* B% c; q- H( K4 I" n
at any increment of size of the feature within its size tolerance. 1 f! V1 d. u n# O9 m6 I& b 0 B, u4 X8 P/ Z# s$ p0 v; u论坛里有中文版的解释http://www.3dportal.cn/discuz/viewthread.php?tid=119393&highlight=Y14.5M" A( \! o. Y# H: M" i