Ratching in roving.

粗成形齿轮。

FA478 increases the itinerancy pneumastic suction motion ,it makes the roving yarn evenness to improve.

FA478还增加了巡回式吹吸风装置，使粗条干均匀度明显提高。

The thesis explain the production process and process specification of the raw material pretreatment, scutching. dressing. drawing. roving. spun yarn.

阐述了原料预处理、清花、梳棉、并条、粗、细的生工艺和工艺原则。

Used for rocking cottonwool and spun silk yarn into sliver and rocing with a certain length in order it measure its evenness.

用于摇取棉、毛、绢等条子和粗成一定长度，以测定其均匀度。

Fantasy yarns mixed to flat ones, never very thick, with different aspect: boucle, jaspe, vrille, hairy, felted, tweed, but never exaggerated.

较特殊的线，本主题中并无粗，线有不同的变化：小圈圈、异色合股、螺旋状钮结、多毛、缩绒等，但都不会有太夸张的表现。