The yarn evenness is an very important index in the flaxspinning process, which is affected with many factors, for example, the person, machine, material, method and surrounding.
条干均匀度是亚麻纺纱工艺中的一个重要指标，其影响因素涉及面很大，如人、机、料、法、环。
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Improving the quality of flaxspinning process, and obtaining good benefit by studying and using the round tail flat needle on the base of different properties of the round pin in spinning.
The control of the chemical reaction of boiling and bleaching is more difficult in the flaxspinning, because its affected factors are very variety, so the chromatic difference is brought about.