1. the operating area of the 094 093 and the same.2. work piece features the same characteristics The staff worker. Does not recognize the point of difference.
1. working areas of the workpiece 093 and 094 in the same area 2. pieces look alike. Offices Can not distinguish the difference between the work piece.
1. Working area of the target 093 094 and stay in the same area 2. The target look alike. Further study. Cannot distinguish the different points of the target!