GAP#REFERENCES 間隙參照#Point-Point 點-點Gaps between Datum Points.基準點之間的間隙。Point-Surface 點-曲面Gaps between Datum Point and its projection on surface.基準點與其在曲面上的投影之間的間隙。Point-Edge 點-邊Gaps between Datum Point and its projection on edge.基準點與其在邊上的投影之間的間隙。