查询词典 transition complex

The transition states of the reaction between THF、 butylene oxide and secondary oxonium ion were acquired. By using frequency analysis and inner reactioncoordinate analysis the rationality of these transition states were affirmed.

分别对四氢呋喃和环氧丁烷，绘出了链增长反应的势能面曲线，得到四氢呋喃链增长反应的活化能为116.749kJ/mol；环氧丁烷链增长反应的活化能为92.672kJ/mol。

China's flora something crisscrossing north-south transition zone, our Palaearctic and Oriental animals intersection transition zone, the South and the North of various animals to survive and multiply the ideal habitat.

也是我国植物区系东西交错、南北过渡带，我国古北界和东洋界动物的交汇过渡区，南北方各种动物生存繁衍的理想栖息地。

A phase-field model was built by optimizing characteristic parameters in the convec-tional phase-field model for peritectic transition, which is suitable to simulate microstructure evolution for peritectic transition of specific alloys.

通过对当前包晶相变相场模型特征参数的优化，建立了适合对具体合金包晶相变微观组织演化进行模拟的相场模型。

In order to improve the electrocatalytic activity of the anode in the Direct Methanol Feul Cell, three kinds of transition metal substituted phosphomolybdic acid modified platinum electrodes were prepared, and the electrochemical behavior in the sulphuric acid solution of transition metal substituted phosphomolybdic acid modified platinum electrodes and their electrocatalytic effects of methanol oxidation were studyed. The anti-poison effect to carbon monoxide of the prepared electrodes were studied by the carbon monoxide adsorbing.

为了提高直接甲醇燃料电池阳极催化活性，本文研究了三种过渡金属取代磷钼酸修饰铂电极在硫酸溶液中的电化学行为及对甲醇的电催化氧化作用，并利用一氧化碳吸附实验评价了三种过渡金属取代磷钼酸修饰铂电极的抗一氧化碳毒化性能。

In this paper, the laminar-turbulent transition and the role of transition in turbomachinery are also preliminarily discussed.

在本文中还初步讨论了层流—湍流的转捩问题以及它在透平机械中的作用和地位。

The results showed that PPC was a thermotropic liquid crystal and displayed the cholesteric banded texture. The reaction conditions had the distinct effects on the propoxy content and liquid crystal property of PPC, with the reaction temperature and content of propionyl chloride increased, the degree of substitution of propoxy increased at the beginning, then trended to steady. The transition temperature and range of liquid crystalline phase were changed with the DS of propoxy, as the DS of propoxy increased, the melt point decreased, and the liquid crystalline phase transition temperature range of PPC get wider.

结果表明，产物PPC具有明显的热致液晶性能，且呈现出胆甾型液晶的彩色条纹织构；反应条件对产物丙酰基含量和液晶性能有显著影响，随反应温度提高和丙酰氯用量增加，产物丙酰基的取代度先增大，后趋于稳定；其相转变温度和温域随丙酰基取代度改变而相应变化，随丙酰基的取代度增大，产物的熔点降低，液晶温度范围变宽。

Thirdly, it is necessary to analyze the pyrology environment of the transition space, because it is a new space form. The update of design, conformation and technology will help to meliorate the pyrology environment of the transition space and make it become a indispensable composing in the pyrology environment of the whole building.

但是对于一个新产生的空间形态无论是从交往产生的角度还是从整个建筑物的气候适宜性要求角度都需要对其热环境进行分析，通过设计、构造及技术的更新使其成为整个建筑优良的热环境体系的一部分。

In Chapter 4, Short-time dynamic behavior of two-dimensional fully frustrated XY model near the Ising-like phase-transition temperature is studied with resistively shunted junction dynamics. The transition temperature and the dynamic and static critical exponents are estimated under both a periodic boundary condition and a fluctuating twist boundary condition using the short-time dynamic scaling analysis.

第四章应用电阻分流结动力学方法研究了完全阻挫XY模型在Ising型相变温度附近的短时动力学行为，运用短时动力学标度分析方法，我们得出了该模型在周期性边界条件下和涨落扭转边界条件下Ising型相变的临界温度和各种临界指数。

Supposing that a unit represented by a transition is restorable,reliability and maintenance degree of a transition obeys Weibull distribution and lognormal distribution respectively,and then the concept of generalized maintenance time is put forward,and the steady state availability formulas of a unit and a system are obtained respectively.

假设SPN中变迁所代表的单元是可修复的，变迁的可靠度服从威布尔分布，维修度服从对数正态分布，在此基础上提出广义维修时间的概念，并得到了单元稳态可用度、系统稳态可用度计算方法。

Though not the first such roadable plane with folding wings, Terrafugia claims its Transition is the only one capable of a seamless transition from road to air and back again.

虽然不是第一架可以在公路上行驶的可折叠翼飞机，特拉弗吉亚表示他们的陆空两用机是唯一一种可以做到在陆空之间做到无缝连续切换的飞机。

There are different types of personal loans available.

有许多不同类型的个人贷款优惠。

The above mentioned teaching model of spiral rising can be used to avoid rigidness in teaching.

上述螺旋式上升的教学模式，可以避免教学形成模式後的僵化现象。