在并条或粗纱加工阶段意外伸长。

Sliver or roving stretch at any stage.

介绍了羊毛与苎麻两种粗纱的前处理工艺。

This paper briefly introduced the pretreatment technique of wool and ramie roving before spinning.

根据D-n曲线可导出粗纱层厚是按等差级数递增的。

The roving layerarithmetic progressionally increasing according to D-N curve is concluded later.

赛罗纺配用的后导纱器对粗纱产生的假捻会影响细纱牵伸的稳定性和成纱条干。

The false twist by the back roving guide in Siro spinning can affect the stability of yarn drafting and the evenness of the yarn.