查询词典 symmetric

It is a common problem tocombine the eigenfunctions for the system with a given symmetric group-into thesymmetrical adapted bases,belonging to the irreducible representations ofthe group.

我们知道，一个具有给定对称性的哈密顿量的本征态可按对称群的不可约表示组合成对称基。

Compact symmetric objects have been found to be young radio sources that they are probably in the early evolutionary stage of large double-lobed radio source.

一些致密对称射电源被发现是很年轻的射电源，它们可能是大的双瓣射电源的早期演化阶段。

In the case of constant and linear extrapolations, the linear system is symmetric.

其中常数及线性的外插法，可以使要解的线性系统仍保持对称性。

Both Mg and Al has no bonding with perfect sheet due to negative binding energy at all symmetric positions, however, the introduction of a Stone-Wales defect increased the binding energy at all adsorption sites to negative values.

Mg和Al不能稳定吸附在完整的石墨烯片上，但是引入SW缺陷降低结合能，使其能够稳定吸附在石墨烯片上。

It also introduces the discrete ordinates couple-solving method (DOT-BSTP-DOT) which uses the half-symmetric angular quadratures for core geometry and the quadratic S〓 biasing angular quadratures for duct geometry. Calibrations for several types of duct are carried out and the schemes of XPR epithermal neutron filter are successfully designed. The other international popular code ANISN is also exploited and modified.

本论文首先开发、修改了其它国际通用屏蔽计算程序DOT/4.2和MCNP/4B，编制了边界源转换程序BSTP，首次建立深穿透屏蔽计算的临界源方向偏倚与指数变换相结合的蒙特卡罗耦合抽样方法，以及堆芯几何采用半对称求积基、孔道几何采用二阶S〓偏向求积基的离散坐标耦合求解法（DOT-BSTP-DOT），并对不同孔道进行了数值校算，成功地得到了西安脉冲堆超热中子过滤器的设计方案。

In order to control the polarization effects of the reflective rotationally symmetric optical systems,polarization aberrations of this type of systems are analyzed.

为了控制反射式旋转对称光学系统中的偏振效应，对该类系统中的偏振像差进行了分析。

The properties of a rotationally symmetric parabolic X-ray lens are studied theoretically and numerically in this paper.

本文给出了旋转轴对称抛物面型X射线组合透镜的理论研究成果。

Main works in this thesis include:(1) The integration of rotationally symmetric triangulation sensor and the vision system is studied.

主要工作包括：1研究了旋转对称型激光三角位移传感器与视觉测量系统的集成。

In the whole considered frequency range, the acoustical performance of rotationally asymmetric structures is better than that of symmetric structures.

且在整个计算频率范围内，非旋转对称结构的吸声性能都要优于旋转对称结构。

The influencing factor of a reflective rotationally symmetric optical interface is defined.An example is presented to be analyzed.

实例分析结果表明，对于具有宽光谱、大入射角、大视场等特点的反射式旋转对称光学系统，要想提高其光学系统的性能，必须控制光学系统的偏振像差。

Article 144 The Government of the Hong Kong Special Administrative Region shall maintain the policy previously practised in Hong Kong in respect of subventions for non-governmental organizations in fields such as education, medicine and health, culture, art, recreation, sports, social welfare and social

第一百四十四条香港特别行政区政府保持原在香港实行的对教育、医疗卫生、文化、艺术、康乐、体育、社会福利、社会工作等方面的民间团体机构的资助政策。原在香港各资助机构任职的人员均可根据原有制度继续受聘。

Small wonder, then, that the Chinese spend more in the shop than any other group of foreign visitors do .

这样的小惊喜，使中国顾客比任何国家的人消费得更多。