查询词典 symmetry

Complete active space self-consistent field calculations with aug-cc-pVTZ basis sets were performed for twelve low-lying electronic states of the methyl peroxy radical CH3O2 and its positive and negative ions in C symmetry.

在C对称性和aug-cc-pVTZ基组水平下，采用全活化空间自洽场方法研究了CH3O2自由基基态及其阴阳离子的12个低激发态。

Complete active space self-consistent field calculations with aug-cc-pVTZ basis sets were performed for twelve low-lying electronic states of the methyl peroxy radical CH3O2 and its positive and negative ions in C s symmetry.

侯春园，郑清川，舒鑫，张红星*摘要：在 Cs 对称性和aug-cc-pVTZ基组水平下，采用全活化空间自洽场方法研究了CH3O2自由基基态及其阴阳离子的12个低激发态。

In addition, we make a perturbative QED correction to the effective one gluon exchange process and expect that this QED and QCD interference effect will give us a good guide for understanding the charge symmetry breaking.

并指出由此得到的三体夸克—夸克对之间的相互作用在扩展的夸克势模型中可能是有用的。

That is one of the best results in asymmetric catalyzed pinacol coupling reaction, which indicates that the tetradentate chiral Schiff-bases with C〓 symmetry and rigid structure may be developed into practical applications.

这说明，具有C〓对称性且其核心结构具有刚性的四齿Schiff--Base是最有希望获得有实用价值的新的手性化合物。

Expanding pinacol reductive coupling reaction into asymmetric one with both diastereoselectivity and enantioselectivity may lead to its application in synthesising medicaments and biologic active compounds with structure of vicinal diol. Asymmetric pinacol coupling reaction is also the most compact and effecient method in synthesizing chiral ligands or chiral auxiliary with C〓 symmetry.

将这一反应发展成为既有高度的非对映选择性，又有高度对映选择性的不对称偶联反应在合成许多含有手性邻二醇结构的药物或生物活性物质将有更重要的应用，同时不对称Piancol偶联反应也是合成C〓对称性的邻二醇多用途手性配体或手性助剂的最为简捷有效的方法。

Results show that for KEMAR mannequin,pinnae destroy the front-back symmetry of HRTF above 5～6 kHz,while for human subjects it reduces to 2.5 kHz because of the locations of ears.

结果表明，在5 kHz至6 kHz以上的频率，耳廓破坏了头相关传输函数的前后对称性；而受耳道入口位置的影响，真人受试者的头相关传输函数在2.5 kHz以上的频率就开始出现前后不对称。

It has been described as work that "relies on geometry and symmetry, fusing curvilinear shapes into pixilated, cleverly impressionistic jigsaw puzzles".

他的作品被称作「依托几何和对称，将曲线融入搞怪之中，机智运用印象主义的智力拼图」。

It is concluded that ions are condensed gradually in the process of heat treatment polytungstate acid,the symmetry of the WO6 octahedral is improved and the strength of the WOWbond is increased.

TG-DTA和IR分析结果表明，随着热处理温度的提高，薄膜中多聚钨酸离子进一步缩合，WO6八面体对称性逐渐增强。

At last ,this thesis discuss some prefatorial problems of symmetry in the world of physics.

最后，对对称性在物理世界中的一些前言问题做简要论述。

The quadrifilar helix antenna is widely used in the space communication, as it has globe symmetry band and good circular polarization.

四臂螺旋天线由于其优良的圆对称半球波束特性，良好的广角极化特性，在空间通信中得到广泛的应用。

He and Nina moved to California and lived at 2005 Ivar Street, Apt.

他和Nina搬到加州，并在2005年伊瓦尔街，公寓生活。

Droperidol （ potently inhibits transfected HERGchannels and this is the probable mechanism for QT prolongation.

氟哌利多有效地抑制了转染的 HERG 钾通道，可能是 QT 间期延长的机制。