查询词典 reaction

Especially of fissionable material able to sustain a chain reaction in such a manner that the rate of reaction increases.

能够以反应速度不断增加的方式继续连锁反应。

The influence of catalyst dosage,reaction time,reaction temperature and the time of taking off the low weight molecular compound on viscosity and flashing point was studied.

考察了催化剂用量、反应温度、反应时间和脱低沸物时间等因素对产品粘度和闪点的影响。

The reaction time, reaction temperature and catalyst influencing on esterification were investigated, and the acid value, flashing point and other properties were determined.

考察了反应时间、反应温度、催化剂等反应条件对酯化反应的影响，并对增塑剂的酸值、闪点及其他主要性能指标进行了测定，改进了酯化反应工艺条件，讨论了样品色泽、酸值及闪点的影响因素。

Teflubenzuron was synthesized from 2,4-difluoronitrobenzene and 2,6-dichlobenil as starting reagent through six-step reaction with the yield of 75.3%.3,5-Dichloro-2,4-difluoroaniline was synthesized by chlorination,reduction reaction from 2,4-difluoronitrobenzene,the yield was 84.5%;2,6-difluorobenzamide with the yield of 87.7% was synthesized by fluoridation and hydrolysis from 2,6-dichlobenil.

以2，4-二氟硝基苯和2，6-二氯苯腈为起始原料，经过6步反应合成伏虫隆，总收率为75.3%。以2，4-二氟硝基苯为原料，经过氯化、还原反应合成3，5-二氯-2，4-二氟苯胺，产率为84.5%；以2，6-二氯苯腈为原料，经过氟化和水解，制得2，6-二氟苯甲酰胺，产率为87.7%；将Ⅱ与二碳酸酯酰化，合成2，6-二氟苯甲酰异氰酸酯，产率为91.3%；Ⅲ与Ⅰ加成，得到杀虫剂伏虫隆，产率为95%。

Reaction conditions are studied, and the result shows that it is better to adopt mercuric oxide or mercuric fluoride as fluorination catalyst with reaction temperature -20~-10℃.

结果表明，采用氧化汞或氟化汞作氟化催化剂、氟化氢作溶剂较好，适宜的反应温度为－20~-10℃，较长的反应时间(48 h)和增加氟化氢和催化剂的量有利于氟化。2-氯－5-三氯甲基吡啶的转化率和选择率均可达到97%以上。

When MPa was given to the rats and mice model by the method of ip and ig,MPa was found with antiinflammatory action at different extent in the delayed footpad reaction with formaldehyde in rats and in the reaction of pinnae tumefaction with xylene in mice.

河蚌多糖对小鼠灌胃给药，能显著增强腹腔巨噬细胞吞噬能力；对大鼠和小鼠ip和ig给予MPa时，分别对甲醛引起的大鼠足跖反应和二甲苯引起的小鼠耳廓肿胀，具有不同程度的抗炎作用

When the hydrogen bomb, the fusion reaction caused by a large number of high-energy neutron fission of uranium in the shell, release of energy and fission neutrons, fission and fusion neutron part of charging the lithium--6 nuclear event of a nuclear reaction Tritium, tritium and deuterium occurs again further fusion reactions.

当氢弹爆炸时，聚变反应产生的大量高能中子引起壳体中铀核裂变，放出能量和裂变中子，裂变中子有一部分与聚变装料中的锂－6核发生核反应产生氚，氚又与氘发生进一步的聚变反应。

In this paper, high-level ab initio and density functional theory are used to theoretically investigate multi-channel radical reaction. The mechanism and kinemics of radical reaction are studied in our paper. We choice three typical systems which are gaseous phase molecules. Some beneficial results have been obtained.

本文用高水平从头算方法研究了多通道自由基反应的机理和动力学，选取三个有代表性的气相分子反应体系进行了研究，通过对这三个体系的分析得到了一些有益的结论。

Thus, the gelation reaction kinetics equation lays a foundation for optimizing gelation condition and selecting reaction rate.

从而为利用固化反应的动力学方程选择最佳固化条件和反应速率打下了基础。

The effects of pH,reaction temperature and reaction time on grafting were discussed.

主要探讨了pH、反应温度、反应时间对丝素膜接枝效果的影响。

For a big chunk of credit-card losses; the number of filings (and thus charge-off rates) would be rising again, whether

年美国个人破产法的一个改动使得破产登记急速下降，而后引起了信用卡大规模的亏损。

Eph. 4:23 And that you be renewed in the spirit of your mind

弗四23 而在你们心思的灵里得以更新