英语语法分析

Property of cuprammonium rayon was introduced. Three passages drawing was done, and this processing plan was adopted when spinning cuprammonium rayon cotton blended knitting yarn.

介绍了铜氨纤维的特性，铜氨纤维与棉纤维混和纺制针织用纱的工艺方案是采用三道并条的工艺。