Research of SEM indicates that the heterogeneity of grain size is the typicalmicrostructure of the materials.
SEM对试样微观形貌的研究表明，晶粒大小不均匀是这种材料的微观特征。
2
Several typicalmicrostructure defects of chilled cast iron tappets, the reasons to cause, their formation as well as prevention measures were described.
介绍了冷激铸铁挺柱出现的几种典型金相组织缺陷、产生原因及解决措施。
3
There exists two typicalmicrostructure in crystals of different diamond films, one is mainly five-fold twins, the other is mainly dislocation and micro twins coexisting.