一.新材料——科学技术发展的基础和先导提起材料,大家都很熟悉,因为每个人每日每时都在跟材料打交道。盖房子离不开钢铁、木材、水泥、砂石砖头、汽车、拖拉机、飞机、大炮、电视机、洗衣机,都是用各种材料制成的,人类要生存、要发展、要搞建设,就得有材料。头几年,多少个厂长和经理为钢材、水泥、木材而发愁,为搞材料而奔波,所以,材料对一个企业、一个国家都是致关重要的。我们把古代史划分成旧石器时代、新石器时代、铁器时代,实际上就是按制造工具的材料来划分的,材料的水平决定社会生产力的水平和社会形态。 I. New Materials - The Basics and Leading Materials for the Development of Science and Technology As we all know ourselves, everyone deals with materials every day, every day. Building houses is inseparable from steel, wood, cement, sand and gravel bricks, cars, tractors, planes, artillery, television sets, washing machines, are made of various materials, human beings to survive, to develop, to engage in construction, Got material. In the first few years, how many directors and managers are worried about steel, cement and timber and are trying to engage in materials? Therefore, materials are crucial to a company and a country. We divide the ancient history into the Paleolithic, Neolithic, iron age, in fact, is divided according to the material used to make tools, the level of material determines the level of social productivity and social formation.