查询词典 orbital

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。

the title compound was synthesized and its structure was studied in theory.the schiff base compound was synthesized by condensation of paeonol with furylfurylamine,then it was deoxidized by sodium borohydried.the energies,bound lengths,bound angles,the net charges of main atom and contributive percents of frontier orbital in the title compound have been calculated by software hyperchem 7.0 in half experience method.the yield rate of title compound was 65.6%.the result of calculation showed that the most of the bond lengths and angles in the system were in the the normal range,negative charge mainly concentrate on o1,o2,o3 and n1.the title compound behaves as quadridentate ligand.

目的合成标题化合物并对其结构进行了理论研究。方法以丹皮酚和糠胺为原料合成席夫碱，经硼氢化钠还原得标题化合物；使用hyperchem7.0程序，用半经验方法计算了化合物分子中能量分布、主要键长、键角以及主要原子的净电荷分布和前言轨道分布。结果标题化合物，收率65.6%；计算结果分析表明，分子中主要原子之间的键长、键角基本在正常的范围内；负电荷主要集中于o1，o2，o3和n1上。

Metro as the orbital vehicle with many more advantages: large load quantity, big safety quotiety, highly speed and convenience.

10多亿人口的大中国来说，它的担子太重。而作为轨道交通的地铁，他的优点更

Methods The clinical data of 62 patients with reconstructive surgeries for orbital fracture were retrorespectively analyzed.

回顾62例因眼眶骨折实施修复手术患者的临床资料。

Halogenated aromatic compounds with great q〓(the most negative net atomic charges on an atom of the molecule), ENC (electron-nuclear attraction energy of the one-center term for the carbon atoms of the weakest carbon-halogen bond), qc (thenet atomic charges on the carbon atom of the weakest carbon-halogen bond) and E〓 tend to be reductively dehalogenated slow, while halogenated aromatic compounds with high values of △E (the difference of front-line orbital energy), EEC (electron-electron repulsion energy of the one-center term for the carbon atoms of the weakest carbon-halogen bond), Mw, q〓 and α tend to be reductively dehalogenated fast.

卤代芳烃化合物的整个分子的最负的原子净电荷，键序最小的碳卤键中碳原子的单中心项电子-核吸引能，该碳-卤键上碳原子的净电荷和E〓与该卤代芳烃化合物还原脱卤的速率常数负相关；而前线轨道间隙能，键序最小的碳卤键中碳原子的单中心项电子-电子推斥能，Mw，q〓和α与该卤代芳烃化合物还原脱卤的速率常数正相关。

The movement of the Near-Earth Asteroids has been roundedly studied in this dissertation by means of different viewpoints, such as the selection of the dynamical models and the adoption of the numerical methods, then the problems of the NEAs' close Earthapproaching, together with the resonances during their orbital evolution, have also been investigated from numerical and theoretical viewpoints.

本文从不同的角度较全面地研究了近地小行星的运动问题，其中包括了对力学模型的选取、数值方法的采用以及从数值和理论的角度研究了近地小行星与地球的交会问题以及近地小行星轨道演化中出现的共振问题。

With satellite for main representative of space mobile carrier is the most important element of Space Fight or Skyish War. Space thruster is the executive system of satellite control and orbital correction, maintenance and movement.

以卫星为主要代表的空间机动平台是&太空战&、&天基战&的重要元素，空间推进器是卫星的姿态控制及轨道的修正、保持和机动的重要执行系统。

Results Supraorbital neuralgia (9.8%) and superficial temporal neuralgia (3%) occurred 3~4 days and aggravated 4~7 days after subfrontal craniotomy. The headache could be persistent and become more serious intermittently and irrsdiated to frontal, parietal, temperal, and para-orbital region.

结果 眶上神经痛和颞浅神经痛均出现于冠状切口经额下入路术后第3~4天，第4~7天逐渐加重达到高峰，均为中、重度疼痛，呈持续性伴阵发性加重，向同侧额部、顶部、颞部或眶周放散，眶上切迹或颞浅动脉处压痛明显。

Gently pressing on the medial orbital positions Depression 3-5 minutes, here is the supraorbital artery supraorbital nerve and vein of the essential role, such as the above.

轻轻按压上眼眶内侧凹陷部位3至5分钟，此处是眶上神经和眶上动脉静脉的必经之处，作用如上述。

Orbital LCH frequently occurs in the supratemporal frontal bone as stem cell precursors of Langerhans cells are located in hematopoetic bone marrow in the frontal bone.

眼眶朗格汉斯组织细胞症最常发生在颞上额骨，因为朗格汉斯的干细胞母体位于额骨的生血骨髓内。

"Please accept this talisman as a token of our thanks."

请收下这个护身符以表达我们的感谢。

If I have that magic, I will be more acceptable in the society.

如果我拥有那种魔法，我将更加被这个社会所容纳。