摘自ASME Y14.5M-1994 2 ~3 Z5 l R& s( k1.3.22 Regardless of Feature Size (RFS):The term used to indicate that a geometric tolerance or datum reference applies 5 p( a% @2 {; d
at any increment of size of the feature within its size tolerance.' j' O6 D/ W& X/ r9 j0 E2 ~