在纺制锦纶丝包芯纱时，选用的外包纤维细长、长度整齐度高，可以改善成纱条干和包覆效果，保证成纱质量。
When spinning polyamide filament core-spun yarn covering fibre should be finer, longer and higher uniformity, which could improve yarn evenness and covering effect and guarantee yarn quality.
一只脚的铂包覆镍丝，或纯铂丝。
One foot of platinum coated nickel wire, or pure platinum wire.
它适用于双组分 芯丝包覆，例如一根非弹性芯丝和一根弹性芯丝组成的双组分芯丝包 覆。
The hollow spindle covering machine is applicable to the coverings of bicomponent core yarns such as the covering of a bicomponent core yarn formed by a non-elastic core yarn and an elastic core yarn.
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