随着现代工业的发展,资源、能源及环境保护的问题日益突出。因此,材料的工程应用必须对之有所考虑,特别是对于大批量生产的零件,所用材料应该来源丰富,要顾及国内的资源及市场供给情况,并应尽量选用生产过程耗能低的材料。从人类可持续发展的战略高度出发,节约原材料,代用稀缺物资 With the development of modern industry, the issue of resources, energy and environmental protection has become increasingly prominent. Therefore, the engineering application of the material must be taken into consideration. Especially for mass-produced parts, the materials used should be rich in origin, taking into account the domestic resources and market supply, and the low-energy materials in the production process should be selected as far as possible. Starting from the strategic height of human sustainable development, we will save raw materials and substitute scarce materials