.尺寸公差:Dimensional tolerance公差=上偏差-下偏差Tolerance =upper deviation lower deviation误差 error形位公差:Shape and position tolerance 形状公差:直线度 straightness平面度 flatness圆度 roundness水平度 level surface圆柱度 cylindrical shape cylinder线轮廓度 line shape面轮廓度 surface shape位置公差:平行度 parallelism垂直度 verticality倾斜度 inclination同轴度 coaxiality对称度 symmetry位置度圆跳动全跳动端面全跳动 overall axial run-out径面全跳动 overall radial run-out表面粗糙度 surface roughness从表面指向实体内 point from the surface to the entity精选范本