This encyclopedia represents an update of existing materials and presents new materials that have been invented or changed, either by new processes or by an innovative technique.

• 材料的百科全书，从军队和航空太空飞行材料到商业的(飞机材料用法的新闻报导延伸，汽车，电子)和基础教材(木头，橡胶，等等)。