Plaited samples of sliver are agitated mechanically between two intersecting toothed rollers through a reference-detergent solution maintained at constant temperature with variations in speed, temperature and time.

• 折叠的条子样品被机械地在两对交叉齿形的罗拉之间搅动,以变化的速度、温度和时间,在保持恒温的基准洗涤剂溶液中通过。