日本工业标准_JIS K6717-1-2006 Plastics - Poly (methyl methacrylate) (PMMA) moulding and extrusion materials - Part 1:Designation system and basis for specifications_
copyright@ 2008-2019 麦多课文库(www.mydoc123.com)网站版权所有备案/许可证编号:苏ICP备17064731号-1