查询词典 customs bond

It can be concluded from the frontier molecular orbital analysis that N (8) is the most active atom of tetrazene, and bond N(8)-N(12) will break first when it is activated.

前线轨道分析结果表明：N(8)是分子中最活跃的原子，在被活化的时候，N(8)-N(12)键先断裂。

The conclusion was drawn that the tetrazine ring and amino group in the DAAT structure were in a plane and were able to build a conjugated π-bond, the calculated fre-quency and intensity were consistent with the experimental values in IR spectra, all thermal energy, thermal capacity and entropy would increase with the increase of temperature.

结果表明： DAAT分子结构中偶氮基两侧的四嗪环和氨基基本在同一个平面上，形成一个大的共轭π键；红外谱计算频率和强度与实验结果整体吻合较好；热能、热容和熵均随温度的升高而增大。

The theoretical properties of BTATz were estimated by a B3LYP method based on 6-31G basis set. The stable geometric configuration and bond order were obtained. The vibrational frequencies, IR spectrum and thermodynamics properties under different temperatures were obtained from vibrational analysis, and the relationship between temperature and thermodynamics properties was deducted. Pyrolysis mechanism of BTATz was discussed, and the transition state and activation energy of ring opening reaction of the tetrazole were deducted.

用B3LYP方法，在6-31G基组水平上对其性能进行了计算，得到了其稳定的几何构型和键级；在振动分析的基础上求得体系的振动频率、IR谱及不同温度下的热力学性质，并得到了温度对热力学性能影响的关系式；探讨了其热解机理，推断出四唑环开环时的过渡态和活化能。

A Photolysis of 5＇-deoxyadenosylcobalamin in neutral aqueous solution and methylcobalamin in neutral and acid aqueous solution has been investigated using pulsed, time-resolved photoacoustic calorimetry in the temperature range of 10-30℃. The resultant enthalpy changes, namely CoC bond dissociation energies for the above cobalamins, 129±17, 163±21 and 176±23kJ/mol, respectively, are consistent with the values obtained by thermolytic kinetic method.

运用光声量热法研究10～30°C温度范围内辅酶〓在中性水溶液中和甲基钴胺素在酸性和中性水溶液中的光解反应，测定了其光解反应的焓变，即Co—C键离解能分别为129±17，163±21和176±23 kJ／mol，这些值和文献中用热分解动力学方法测得的值一致。

The observed enthalpy changes for above compounds, and measured cobalt-carbon bond dissociation energies, fall within the expected range of 80-180kJ/mol consistent with that from thermolytic kinetic and thermodynaminc equilibrium measurements.

值得注意的是，我们所得的〓的Co-C键离解能为176 kJ／mol，这是目前为止辅酶〓及其模型化合物中精确测定的Co—C键离解能最大值。

Tetraphenyl-1,2-ethanediol and a S-S bond type thermal iniferter, i.e., tetraethyl thiuram disulfide were used to consist of new reverse ATRP initiation systems TPED/FeCl3/PPh3 and TD/FeCl3/PPh3, respectively.

这比文献(Sawamoto et al， 1998)报道的由2-氯-2，4，4-三甲基戊二酸二甲酯(dimethyl 2-chloro-2，4，4-trimethylglutarate)/RuCl2(PPh3)/Al引发体系引发MMA聚合的方法制备α-H，ω-Cl-PMMA要简便。

A variation of the rocket belt even appeared in the 1965 James Bond movie,"Thunderball."

火箭带的一个变体甚至还出现在了1965詹姆斯邦德系列电影之&霹雳弹&中。

This device was used in the spy movie "Thunderball" about British secret agent James Bond.

这种装置在特工电影《 Thunderball 》中使用，这是一部有关英国特工人员詹姆士。

This device was used in the spy movie "Thunderball" about British secret agent James Bond.

这种装置曾应用于关于英国间谍007的电影&铁金刚勇斗魔鬼党&中。

Some of the more eye-catching costumes — including James Bond's dinner jacket from Thunderball — were modeled by staff at the auction house.

拍卖会场上的工作人员充当模特儿，展示一些较抢眼的戏服，包括「霹雳弹」片中庞德所穿的晚礼服。

Nowadays, most of research are to build a transmutative Petri Nets through adding controlling place sets, controlling arc sets and controlling policy to the basic Petri Nets, while the Controlled Petri Nets could be used to argue many controlling theory problems conveniently and to induce many logically and physically supervisory and solve the Event Feedback Controlling Problems and State Feedback Controlling Problem in DEDS supervisory theory.

目前大多数的研究表现为在变形后的受控Petri网基础上，利用各种方法求得各种逻辑型、结构型控制器，解决DEDS监控理论中的事件反馈控制问题与状态反馈控制问题。

On one hand, there are discussions with the works council and union about extension of short time working up to the end of September.

一方面，有讨论，工程理事会和联盟关于延长工作时间短至9月底。