The performance of knitted fabrics made of untwisted yarn and traditional cotton yarn are compared, and the properties of untwisted yarn and its fabric are studied in this article.

比较了无捻纱织物与棉纱织物的性能； 对水溶性无捻纱和无捻纱织物的相关性能进行了分析研究，文章最后对无捻纱产品的开发作了简要阐述。

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The yarn is twisted, exposed to heat which sets the twist in place, cooled and untwisted.

长丝首先被加捻，再被加热，在加热时使捻度定型；然后冷却，最后除去捻度。

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This paper proceeds from the forming principle and the structure of a yarn of air-jet Spinning, We analyse the change in the yarn Struture When air-jet Spin-ning yarn is untwisted.

从喷气纺纱的成纱原理及成纱结构出发，分析了喷气纱退拈时的结构变化，对喷气纱的所缠拈度测定进行了探讨，提出了在Y331拈度仪上测量计算喷气纱包缠拈度的方法。

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