加捻的方向不会影响纱线的外观。
The direction of the twist does not affect the yarn's performance.
纺纱是对纤维集合体牵伸加捻的过程。
Spinning is the process of drawing out and twisting a mass of cleaned, prepared fibres.
当纱线被加捻的时候，在捻度的方向上也会相应地形成内应力。
As the yarn is twisted, internal forces are built up in the direction of the twist.
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