Secondly,the effects of ratio of length to diameter(L/D) of new-style spinneret on properties of PAN precursor fiber were investigated in this article.
其次,本文又着重研究了不同长径比(L/D)的新型喷丝头对PAN原丝性能的影响。
参考来源 - 新型喷丝头对PAN基碳纤维用原丝纺丝工艺及纤维性能影响的研究·2,447,543篇论文数据，部分数据来源于NoteExpress
The strip microstructure of carbon layers resembled that of PAN molecular chains in precursor fiber.
条带结构的碳层与原丝分子链条带结构状态十分相似。
This paper probes into the effects of process conditions on precursor fiber strength, elongation and chemical residual.
本文探讨了工艺条件对粘胶原丝强度、 伸长及化学物残留量的影响。
The composition, the molecular and the characteristics of polyimide (PI) fiber as a precursor of carbon fibers were introduced.
介绍了作为碳纤维前驱体的聚酰亚胺（PI）纤维的组成、分子结构和特性；
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