我们的社会已经进入新工艺和新材料的时代。在我们周围形成了材料世界,多数属于结构材料和功能材料。二十世纪通常称为钢的世纪。这个定义在二十世纪的上半期是完全合理的。九十年代是否也合理呢?在后十 Our society has entered an era of new craftsmanship and new materials. The material world formed around us, most of which are structural and functional materials. The twentieth century is often called the century of steel. This definition is entirely reasonable in the first half of the twentieth century. The nineties is also reasonable? In the last ten