根据聚丙烯腈基碳纤维生产工艺路线，从原丝、 预氧化、碳化工艺及结构上分析了聚丙烯腈基碳纤维焦油形成的原因。
The reasons for tar formation from polyacrylonitrile-based carbon fiber were analyzed from the structure and the production line, from as-spun fiber, pre-oxidation to carbonization.
对DTA-丙烯酰胺（AM）组成的氧化还原体系在碱性介质中引发的丙烯酰胺自由基均聚合反应进行了系统研究。
The kinetic and mechanistic features of DTA initiated aqueous polymerization of acrylamide (AM) have been investigated in an alkaline medium.
结论丙烯基硫脲可抑制酚氧化酶活性而对钉螺、螺卵的成活及其产卵量、卵壳的形成、孵化率均有影响。
It is concluded that acryl thiourea effects not only snail eggs, but also their rates of egg-laying, its egg shell and the rate of breeding.
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