社会高速发展的过程中也带来很多负面影响,比如自然资源供应紧张,然而,这也促使可替代材料的飞速发展。在轻武器领域,塑料在枪弹上的应用,也正体现了这样的发展过程——采用资源广泛、加工简单、价格低廉的新材料代替传统材料成为枪弹发展的一条必然之路。美国NATEC公司的塑料弹壳枪弹,充分利用塑料热传导系数小、摩擦系数小、比重小等诸多特点,扬长避短,为枪弹革命性的发展开了一个好头。 The rapid social development has also brought a lot of negative effects, such as the tight supply of natural resources, however, it also prompted the rapid development of alternative materials. The application of plastic to bullets in the field of light weapons also embodies such a process of development - a necessary way to replace the traditional materials with bulky resources, simple processing and low prices has become an inevitable route for the development of bullets. US NATEC plastic shell bullets, take full advantage of plastic thermal conductivity is small, the coefficient of friction is small, the proportion of small and many other features, avoid weaknesses, revolutionary development for the bullet opened a good head.