Dimethylformamide(DMF)is widely used in leather industry, polyacrylonitrile fibre spinning and butadiene extraction craft as an important organic solvent.
二甲基甲酰胺（DMF）是一种重要的有机溶剂，被广泛应用于合成革生产、聚丙烯腈抽丝、丁二烯抽提等工艺中。
Catalyst processing method is used to speed up the preoxidation of polyacrylonitrile fibre. The catalysis results are evaluated with the aid of DSC curves.
为加快聚丙烯腈纤维的预氧化速度，采用催化剂处理方法，借助于DS C曲线来评定催化效果。
The production technique and forming mechanism of polyacrylonitrile carbon fibre are discussed and the main use of carbon fibre as well as its vast development vistas are expounded.
文章探讨了聚丙烯腈基碳纤维的生产技术、形成机理，阐明了碳纤维的主要用途及广阔的发展前景。
The polypropylene fibre have the better effect to concrete that the flowability is not too big than that is big. The polyacrylonitrile have no use to improve the homogeneity of concrete.
聚丙烯纤维不适于大流动性混凝土，对中小流动性的混凝土匀质性改善作用大，聚丙烯腈不宜用于匀质性的改善。
The polypropylene fibre have the better effect to concrete that the flowability is not too big than that is big. The polyacrylonitrile have no use to improve the homogeneity of concrete.
聚丙烯纤维不适于大流动性混凝土，对中小流动性的混凝土匀质性改善作用大，聚丙烯腈不宜用于匀质性的改善。
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