把金属线拉紧，然后把两头捻紧。

Pull the wire tight and then twist the ends round.

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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.

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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 ;

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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 ;

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