Binucleated granulocyte appeared in the stage from promyelocyte to neutrophilic band form with mostly symmetry mirror image characteristics in size and shape.
From the earliest region-position code, and then graphemic code to the very fashionable pinyin input method, it becomes wider, faster, intelligent and humanization.
From the analysis of the faults distributing characters,the main part of faults have two group normal fault system with "lambdoidal shape"and trending towards to NE and NS separately.