中文说明：ABD矩阵提供一个包含数以千计的复合内容只有文件存储库。所有值都都很容易访问到 hobbyiests、 学生、 教授和专业工程师学习关于复合材料的兴趣。
English Description：
ABD Matrix provides a repository containing thousands of composite-content only documents. All values are easily accesible to hobbyiests, students, professors and professional engineers interested in learning about composites.