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图7 90CR和90WR试样的组织形态和眼状纳米孪晶束结构

Fig.7 Microstructure morphology and eye-shaped nanotwin bundles of 90CR and 90WR samples (a) 90CR, (b) magnified regional view of specimen 90CR, (c) 90WR, (d) magnified regional view of specimen 90WR