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We think the active species is SeCO under high pressure and is H2Se under atmospheric pressure. 在实验的基础上提出了对硒催化CO/H_2O还原芳香硝基化合物机理的一些粗浅认识。
PEG/Y(OAr)3 system only contains sole bifunctional active species to synthesize copolymer of CL with PEG (poly(CL-b-PEG-b-CL)). PEG/Y(OAr)3引发体系中只有一种活性中心,可以制备CL和PEG的poly(CL-b--PEG-b-CL)三嵌段共聚物。
The catalysts for the ammoxidation of 3-picoline were classified in terms of differences in active species and supports,which were discussed in detail. 按3-甲基吡啶氨氧化催化剂的活性组分和载体不同进行分类,介绍了各类催化剂的发展状况;
The catalysts for the ammoxidation of 3-picoline were classified in terms of differences in active species and supports, which were discussed in detail. 摘要按3-甲基吡啶氨氧化催化剂的活性组分和载体不同进行分类，介绍了各类催化剂的发展状况；
In this paper,the catalysts for the ammoxidation of 3-picoline are classified in terms of differences in active species and supports,which are discussed in detail. 按3-甲基吡啶氨氧化催化剂活性组分和载体不同进行分类,分别介绍了各类催化剂的发展状况;
Many functional layered materials have been prepared by altering the cations, intercalating inorganic/organic groups and loading the active species on the surface. 通过调变层板骨架阳离子、表面负载活性物种、层间柱撑无机或有机基团合成了各种新型功能性层状材料,并在酸碱催化、光催化、环保以及医药等领域有着广泛的应用。
Under the condition corresponding to the highest creation rate of active species (N +,N f),Suitable decrease in gas pressure,and increase in discharge voltage and gas temperature will be beneficial to the active particles reaching a cathode. 在活性氮粒子 (N+ ,Nf)产率最高的放电条件下 ,适当降低放电气压 ,提高阴极位降和气体温度 ,有利于两种活性氮粒子 (N+ ,Nf)达到阴极。
H NMR and SEC analyses indicate two kinds of active species and corresponding PCL with different structures are existed in the system. Increasing the ratio of glycol to Y(OAr)3 benefits the formation of monofunctional active species. 经过1H NMR和SEC分析表明聚合体系中有两种活性中心,形成两种链结构,二醇/Y(OAr)3比值的增大有利于单钇活性中心的形成。
The action on addition urea is testified, that the urea is not only a nitrogen - containing biological active species, but also can combine phenol to become an easily oxidized content compound. 尿素所起的作用,不仅是因为尿素是一种含氮生物活性物,而且还可能因为尿素与酚形成了一种易于氧化的包体化合物。
This paper introduces the complexation and dissociation of different Lewis bases with active species in the area of anionic polymerization reported in literatures and elucidates their applications. 介绍和评述了文献中有关路易氏碱在阴离子聚合中对活性中心的络合和解缔作用。
It is shown that the emulsifiable activity of EAFs increases with increasing their polarity and the main interfacially active species in EAFs are aliphatic acids. 结果表明：原油组分的乳化活性随着极性的增强而增强。脂肪有机酸是孤岛原油界面活性物质的主要组分。
The corrosion and decomposition of PEG achieves by concentrated NaOH under hydro-thermal condition which forms activated species of carbon. 较浓的氢氧化钠水热条件下促进PEG的腐蚀与分解，产生碳的活性物种。
The orient has been playing an active role in the world economy. 亚洲一直在世界经济中发挥积极作用。
He is an active member of the school's stamp club. 他是学校集邮俱乐部的一名活跃会员。
Do wolves belong to the canine species? 狼是犬科动物吗？
An active volcano may explode at any time. 活火山随时都有可能爆发。
Is it wise to engage in active sports at your age? 我这样的年纪积极参加体育活动是否明智？
We should do our best to save endangered species. 我们应该竭尽全力挽救濒于灭绝的生物。
She was active as a left-winger in the party. 她是党内积极的左翼分子。
He was very active and rode down several horses. 他劲头很大，一连骑了好几匹马。