查询词典 symmetry

Identical autopilots are used to control the pitch and yaw motions if the missile has two planes of symmetry.

如果导弹有两个对称面，则使用相同的自动驾驶仪控制俯仰和偏航运动。

Under the framework of constituent quark model, according to the effective degrees of freedom used, we have the Glashow-Isgur model , the spontaneous chiral symmetry breaking model, the hybrid model and so on.All of these models are successful to describe the properties of the mesons and baryons.

组分夸克模型是一种非相对论模型，根据所采用的有效自由度的不同，组分夸克模型又可以分为好几种具体的模型，主要有：Glashow-Isgur模型、手征对称自发破缺模型和&杂化&模型等。

A key aspect of symmetry in quantum physics is the division of particles into bosons and fermions, which have fundamentally dissimilar quantum states and completely different behaviors.

在量子物理的对称中，将粒子区分为费米子与玻色子是个关键的面向，这两者在本质上有截然不同的量子态与南辕北辙的行为。

At future high-energy colliders, searching for Higgs bosons and exploring the mechanism of electroweak symmetry breaking are another important task.

未来的高能对撞机的另一个重要任务就是寻找Higgs，以探究电弱对称性破缺的机制。

The first two interactions can be described by renormalized quantum field theory , and are mediated by gauge bosons that correspond to a particular type of gauge symmetry .

头两个相互作用来描述重整量子场论，并介导的衡量玻色子相对应的某一特定类型的指数对称性。阿重整量子场论广义相对论尚未实现，但各种形式的弦理论看来大有希望。

We include the electromagnetic effects consistently in the QCD sum rule approach to keep the final sum rule gauge invariant. Then we study the role of electromagnetic effects in the isospin symmetry breakings of the system.

我们把电磁相互作用自洽地包括进来使最后的求和规则是规范不变的，然后研究电磁效应在体系的同位旋对称性破缺中的作用。

We make a concise review of this method and use it to calculate the radiative decays of the vector mesons, the baryon magnetic moments, the isospin symmetry breakings in π,ρsystem and πNN coupling constants. All of our results agree well with data.

我们对这一方法作了扼要的评述，应用它计算和分析了矢量介子的辐射衰变宽度，重子磁矩，π和ρ体系的同位旋对称性破缺以及πNN 耦合常数的同位旋对称性破缺等，都得到了与实验符合得很好的结果。

The two cubic potentials induce the static and the second-order harmonic parts of the discrete breathers with certain symmetry.

三次非线性势能函数的存在使系统中的离散呼吸子解具有特定对称性的直流和二阶简谐振动分量。

There are three forms of symmetry in virus capsids: icosahedral , helical and complex forms.

壳粒排列的方式使病毒的结构呈几何对称，病毒衣壳有三种对称形式：二十面体立体对称、螺旋对称、复合对称，螺旋结构呈杆状，而二十面体由对称的亚单位组成近似的球状，非对称的衣壳是较复杂的形式，往往与细菌病毒有关。

Papovaviruses are also icosahedral symmetry viruses, but their capsid structures disobey the quasi-equivalence theory. Papovaviruse capsids are all composed of pentagons. Furthermore, these pentagons can not be connected directly, because there is a certain distance among them.

乳多空病毒尽管也是二十面体对称的病毒，但其衣壳结构违背了准等价原理，它们全是由五边形构建的几何实体，而且奇妙的是这些五边形不能直接拼接在一起，相互间存在一定的距离间隔。

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。