thus obtained carbon nanofibers
Polyacrylonitrile(PAN) nanofibers were manufactured by electrospinning,and then preoxidized at(250 ℃) and carbonized at 850 ℃,thus obtained carbon nanofibers.
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thus obtained carbon nanofibers
从而得到了碳纳米纤维
以上为机器翻译结果，长、整句建议使用 人工翻译 。