轭

The preconditioned conjugated gradient method is a very efficient iterative method for solving large sparse linear equations.

预处理共轭梯度法是求解大型稀疏线性方程组的极为有效的迭代法。

The measuring of conductivity of the copolymers also indicates that addition of phthalie acid did not destroy the conjugation system of homopolymer of propargyl alcohol.

产物电导率的测量亦说明邻苯二甲酸的加入，并没有破坏聚丙炔醇的共轭体系，但共聚物的电导牢随邻苯二甲酸的含量增加而略有降低。

For 9 pyrazole compounds,their geometry and electronic structures were analyzed by means of natural bond orbital theory;their reactivity was analyzed by electrostatic potential distributions,heats of formation and Bader density were also calculated.

在最稳定几何构型基础上，基于自然键轨道理论，分析了稳定结构的成键情况和吡唑环上的共轭性；用静电势图分析了吡唑化合物的反应性；理论估算了9种化合物的标准气态生成热和Bader密度；最后采用VLW方程计算了这些化合物的爆速、爆压。

For 9 pyrazole compounds, their geometry and electronic structures were analyzed by means of natural bond orbital theory; their reactivity was analyzed by electrostatic potential distributions, heats of formation and Bader density were also calculated. After that, detonation velocities and Chapman-Jouguet pressures of these compounds were given by means of VLW equation.

在最稳定几何构型基础上，基于自然键轨道理论，分析了稳定结构的成键情况和吡唑环上的共轭性；用静电势图分析了吡唑化合物的反应性；理论估算了9种化合物的标准气态生成热和Bader密度；最后采用VLW方程计算了这些化合物的爆速、爆压。

Substituent effect of pyrazoles was also investigated by DNMR and DFT.We successfully synthesized these intermediates with exclusively-conformations in a mild condition. X-ray results show that substituents in the pyrazolyl ring affect greatly on the structures of products, especially theπdelocation of the fragment 1-metal-butadiene.

本文以取代吡唑和1-炔基Fischer卡宾化合物的Michael加成反应合成了12个-型β-吡唑基烯基卡宾化合物，反应条件温和。X-ray晶体衍射显示吡唑上取代基对产物结构，特别是1-M-丁二烯的共轭程度具有较大的影响。

A sufficient condition ensuring the Gauss-Newton method quadratically convergent exactly is given.

给出了保证Gauss-Newton法恰2阶收敛的条件，在此基础上构造了利用条件预优共轭梯度法求解Gauss-Newton方程的新的有效算法。

Four hemicyanine derivatives,-N-(4-sulfobutyl)-4-[2-(4-N,N-dimethylamino-phenyl) etheny1] pyridinium (P1),-N-(4-sulfobutyl)-4-[2-(4-N,N-dimethylaminophenyl)-1,3-buteny1] pyridinium (P2),-N-(4-sulfobutyl)-4-2-(4-N,N-dimethylaminophenyl) ethenyll quinolinium (Q1) and-N-(4-sulfobutyl)-4-

合成了具有不同共轭链长度的吡啶盐类及喹啉盐类半菁染料-N-（4-磺酸丁基）-4-[2-4-N，N-二甲基氨基苯基）乙烯基]吡啶鎓盐(P1、-N-（4-磺酸丁基）-4-[2-4-N，N-二甲基氨基苯基）丁二烯基]吡啶鎓盐(P2、-N-（4-磺酸丁基）-4-[2-(4-N，N-二甲基氨基苯基)乙烯基]哇琳鎓盐(Q1)以及-N-（4-磺酸丁基）-4-[2-4-N，N-二甲基氨基苯基丁二烯基]喹啉鎓盐(Q2)。研究了它们的光物理性质，并将它们用作TiO2纳米晶电极的光敏化剂引入光电化学电池。

In order to investigate the basic heat transfer characteristics of the platelet regeneratively cooled thrust chamber, the second chapter focussed on the developed flow and heat transfer in the long straight regenerative cooling channels with rectangular sections.

为了解层板再生冷却推力室在传热上的基本特征，第二章重点研究流动和热充分发展的矩形截面长、直再生冷却通道内的传热问题，建立了层板再生冷却推力室二维流固耦合传热过程的数理模型，采用通用形式控制方程描述冷却剂紊流传热和通道材料内导热的共轭传热问题，从而避免了流-固区域之间的反复迭代，大大缩短了计算时间。

The peculiar feature of the present invention lies in the fact that said support plate is provided with means enabling said footwear to be quickly positioned and fastened to said plate, in which said means are adapted to removably cooperate with corresponding conjugate abutting members, or checks, provided on the sole of said footwear.

本发明的独特特点在于：所述支承板配有能将所述足穿鞋快速定位和固定到所述支承板上的装置，其中所述装置适合于与设置在所述足穿鞋的鞋底上的相应的共轭邻接件或止动件活动地协同操作。

The seed layer has an intermolecular spacing of 3.4 -0.3 AA. and it is formed by rodlike supramolecules comprised of disc-shaped molecules of at least one polycyclic organic compound with conjugated p-system.

该晶种层具有3.4±0.3的分子间距，并通过由盘形分子构成的棒状超分子形成，该盘形分子至少为一种具有π共轭体系的多环有机化合物。

In the United States, chronic alcoholism and hepatitis C are the most common ones.

在美国，慢性酒精中毒，肝炎是最常见的。

If you have any questions, you can contact me anytime.

如果有任何问题，你可以随时联系我。