These rocks are lack of foliation and resulted from the brittle fragmentation of mineral grains with rotation of grain fragments accompanied by fractional grainboundarysliding and dilatancy.
这类岩石缺乏面理构造，是由于矿物颗粒的脆性碎裂，旋转以及颗粒边界的磨擦滑动和扩展而造成的。
2
Experimental results indicate that cavities are formed during superplastic deformation due to the inconsistency of grainboundarysliding.
实验结果表明，孔洞是由于超塑性拉伸变形中品界滑动不协调而引起的。
3
In the process of superplastic deformation, the dislocation sliding has important cordinating effect, so that the grainboundarysliding proceeds easily.