为了适应全球出现的结构调整的大趋势和国内外市场需求的变化 ,各行各业都在加大企业技术进步和努力创新的力度 ,加快产品升级换代的速度。急需创新的材料、创新的技术。这就迫使从事材料和测试的科技人员必须紧跟形势为此作出贡献。为了全面了解材料的宏观组织及其性能 ;为了 In order to meet the global trend of structural adjustment and changes in domestic and international market demands, all walks of life are increasing the technological progress and efforts of enterprises to innovate, speeding up the rate of product upgrading. Urgent need of innovative materials, innovative technology. This forces scientific and technical personnel engaged in material and testing to follow the situation and contribute to this. In order to fully understand the macro organization of materials and their performance;