YY医药标准 YY/T 0473-2004 外科植入物聚交酯共聚物和共混物体外降解试验 YY/T 0473-2004.Implants for surgery- -Copolymers and blends based on polylactide-In vitro degradatio... 10月08日YY/T 0473 阅读全文