然而，人们习惯性的生产棉和亚麻纱线时用Z捻，生产羊毛和精纺毛料纱线时用S捻。
However, it is customary to produce cotton and linen yarns with a Z-twist and woolen and worsted yarns with an S-twist.
利用聚丙烯纤维对亚麻纱线进行包缠，使用该纱线织造3种经纱密度相同，纬纱密度不同的平纹织物。
Polypropylene filaments were employed to wrap the flax yarn. 3 kinds of plain fabrics were woven with identical warp density and various weft density by using the produced yarns.
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