Info:Polyester Filament Yarn which consist of SDY (Spin Draw Yarn) &DTY (Draw Textured Yarn). SDY ha ......是什么意思_Info:Polyester Filament Yarn which consist of SDY (Spin Draw Yarn) &DTY (Draw Textured Yarn). SDY ha ......在线翻译_英语_读音_用法_例句