把金属线拉紧，然后把两头捻紧。
如果你用右手顺时针的旋转它，S捻的纱线会越变越紧，Z捻的纱线会越变越松。
When it is rolled clockwise by your right hand, an S-twist yarn will become tighter and a Z-twist yarn looser.
织物中纱线的弯曲刚度还与织物紧度、纱线捻系数、织造和染整加工中的张力等因素有关；
The yarn bending rigidity in the fabric also concerns the weaving density and yarn twist factor etc ;
本机具有自动化程度高，捻帽紧松一致的特点。
The machine has a high degree of automation, twist-cap bear the same characteristics.
本机具有自动化程度高，捻帽紧松一致的特点。
The machine has a high degree of automation, twist-cap bear the same characteristics.
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