7.1 Introduction Definition 2 The union of two or more diverse materials to attain synergetic or superior qualities to those exhibited by individual members. 两种或多种不同材料的结合体，可获得协同 的或优于个别材料的品质 PDF文件使用"pdfFactory Pro”试用版本创建ww,fineprint..com,cn7.1 Introduction Definition 2 The union of two or more diverse materials to attain synergetic or superior qualities to those exhibited by individual members. 两种或多种不同材料的结合体，可获得协同 的或优于个别材料的品质 PDF 文件使用 "pdfFactory Pro" 试用版本创建 www.fineprint.com.cn