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介绍了粗旦丙纶强力丝的生产工艺、着色方法及存在的问题。
The production technology, the method of stain and the problems in the production are introduced.
youdao
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介绍了粗旦丙纶强力丝的生产工艺、着色方法及存在的问题。
The production technology, the method of stain and the problems in the production are introduced.
youdao