氧化合物

When the temperature became higher, the O and N impurity absorbed on the surface of powder reacted with catalyst and formed inertial compositions, wrapped on the surface of graphite powder, then the process of transformation stopped.

在较高温度下，纳米石墨表面吸附的含氮、氧等官能团与熔体金属发生反应生成惰性固态化合物并包裹在石墨表面，阻止了石墨的进一步溶解。

Fig. 56. Superoxide anion scavenging effect of compounds…………………….76

图56。化合物的超氧自由基捕捉能力

A fragrant crystalline compound, C9H6O2, extracted from several plants, such as tonka beans and sweet clover, or produced synthetically and widely used in perfumes.

香豆素，氧杂萘邻铜一种碎片状晶体化合物，c9h6o2，从几种植物中提取，如零陵香豆和草木樨植物，或有机合成且广泛用于香水业

This article narrates the transformation of carbonyl group in optically active epoxy ketones under different reagents and enumerates some synthetic applications of this kind of transformation.

本文讲述了有机合成中光学活性的环氧酮化合物中酮羰基在不同试剂下的转化，并列举了一些相关的合成应用。

This article narrates the transformation of carbonyl group in optically active epoxy ketone s under different reagents and enumerates some synthetic applications of this kind of transformation.

本文讲述了有机合成中光学活性的环氧酮化合物中酮羰基在不同试剂下的转化，并列举了一些相关的合成应用。

Nitratomethyl-3-ethyloxetane was synthesized by the process of cyclization, nitation from trimethlolpropane and diethyl carbonate, and the homopolymer of 3-nitratomethyl-3-ethyloxetane was synthesized with 1,4-butanediol as initator and boron trifluoride etherate as an catalyst by cationic ring-opening polymerization.

以三羟-甲基丙烷和碳酸二乙酯为原料经环化、硝化两步反应合成了化合物3-硝酸酯甲基－3-乙基氧丁环；采用1，4-丁二醇为引发剂，三氟化硼乙醚(BF3Et2O)为催化剂，NIMEO发生阳离子开环聚合得到一种端羟硝酸酯均聚醚PNIMEO。

Appropriate rare earth complex was introduced to protect carbohydrates from degradation in oxygen bleaching of unbleached kraft pulp .

硫酸盐木浆氧漂处理中，加入适量的稀土络合物助剂，能起到保护碳水化合物的作用。

Under the same suited control condition, the hydrogen production of the mixed cutler is higher than the single one. Secondly, the biohydrogen production from three food wastes mainly composed of undissolved carbohydrates by anaerobic fermentation of digested sludge is studied.

其次从不同废弃食物发酵产氢特性研究的角度，采用厌氧活性污泥为接种物，以马铃薯、青菜和米饭3种富含不溶解碳水化合物的废弃食物作为培养基料，对其发酵产氢特性进行了试验研究。

This parameter, therefore, represents a more integrated measure than the simple evaluation of the content of individual antioxidants, and includes all unmeasured or unmeasurable compounds.

这个参量，因此，比各自的抗氧剂内容的简单的评估代表一项更加联合的措施，并且包括所有不可测或不可测量的化合物。

The dissertation includes two parts as follows:In the first part, the synthesis of the uracil derivatives : 5-methoxyuracil and 5-methyluracil was investigated, and the reaction conditions were optimized, thus the overall yields were higher than before.

本论文分为两大部分：第一部分：对尿嘧啶类衍生物5-甲氧基尿嘧啶和5-甲基尿嘧啶的合成进行了研究，并分别进行了工艺优化设计，使这两个化合物的合成总收率均比原来提高。

She gently rebuff ed him, but agreed that they could be friends

她婉言拒绝了，但同意作为朋友相处。

If in the penal farm, you were sure to be criticized.

要是在劳改农场，你等着挨绳子吧！