查询词典 symmetry

The first 3D dimensional polymeric cluster 〓(8) has been synthesized though solid state reaction, the X-ray structural analysis showed that the three-dimensional framework of 8 has a very high degree of symmetry with three mirror planes and one four rotation axis in I4/mmm space group, and composed of two building blocks 〓 and 〓 bridged by S-Cu〓 and Cu〓-Cl bond.

化合物6非线性折射值n〓为-9.3×10〓m〓·w〓，显示自散焦性质，与我们以前观察到的现象相反，这可能是配体作用造成的；非线性吸收值α〓 1.23×10〓m·w〓，表现出较强的非线性吸收效应。

The research shows that asymmetry information can cause sluggish behaviour for the same type of employees, the exogenous layoff probability can restrain labour positivity and threaten the efficient labour of the employees, and reduce the agent cost. While endogenetic layoff probability cannot impact on the function of the assembled mechanisms consisting of promotion and fixed income under asymmetry information, which can avoid the moral risk of employees to achieve the same degree of their labour under symmetry information.

研究表明：非对称信息会诱导同类员工偷懒行为，外生裁员概率抑制员工的劳动积极性，对员工的有效劳动构成一种威胁，但裁员概率降低了代理成本；外生裁员机制并不影响信息非对称下的晋升激励和固定收入组合机制持有的避免员工道德风险的功能，实现员工对称信息下的努力程度；以绩效评估为特征的内生裁员机制能够促使异类员工更加努力工作，提高产量，相应地也增加了工资支出；高能员工比低能员工更努力，提高员工裁员绩效标准和高能员工比例，有利于降低代理成本。

By using the group-chain, the wavefunctions of the 4f〓 configuration for RE ions are also expressed as linear combinations of group-chain basis functions in Butler's irreducible representation notation. The matrix elements of the CF Hamiltonian then are calculated by means of the Wigner-Eckart theorem and factorization lemma of the jm factors. Before the CF level fitting, a point-charge calculation of the conventional CF parameters B〓 has been performed by means of the lattice-sum technique from the known crystal structure data. The corresponding parameters in the group-chain are calculated by the conversion relationship between two schemes that proved identical in essence, which are usually used as initial values in the fit to the experimental levels. The ratios of the same k-value CF parameters are suggested as the constraint conditions in the fit, in order to utilize fully the symmetry distortion degree of the studied system.

利用群链理论，属稀土离子4f〓组态的波函数表示为以不可约表示标记的群链基波函数的线性组合；借助Wigner-Eckart定理和2jm和3jm因子的分解定律计算了晶场哈密顿的矩阵元；根据点电荷模型和已知晶体结构数据，利用点阵求和技术计算得到传统晶场参数B〓初值，相应的非传统形式的群链参数初值则由两种方案下的转换关系求得；这些初值通常作为非线性拟合晶场能级计算的初值，系统的对称性畸变信息则反映在以同阶晶场参数的比值作为能级拟合的约束条件。

I feel the delicate symmetry of a leaf.

我感到树叶的对称美。

He seems unconscious that his features are fine, that they have a southern symmetry, clearness, regularity in their chiseling; nor does a spectator become aware of this advantage till he has examined him well, for an anxious countenance, and a hollow, somewhat haggard, outline of face disturb the idea of beauty with suggestive, whether truly or delusively, of a considerate, perhaps a kind nature with one of care.

他好像没有意识到自己的相貌长得还不错，也没有意识到他的相貌有南方人的匀称、清秀和端正的轮廓，不过，一个旁观者也得对他仔细端详一番才能发现这种特点，因为那种忧心忡忡的脸色和一张凹陷而有点憔悴的脸，难免要使细心人一下子看不出什么美来。

Great size, including height at shoulder and proportionate length of body, is the desideratum to be aimed at, and it is desired to firmly establish a race that shall average from 32 to 34 inches in dogs, showing the requisite power, activity, courage and symmetry.

体型巨大，包括肩高和身体长度所希望达到的目标尺寸，应该在32~34英寸的范围内，结构坚固、稳定，显示出力量，活跃、勇气和匀称性。

Great size, including height at shoulder and proportionatelength of body, is the desideratum to be aimed at, and it is desired tofirmly establish a race that shall average from 32 to 34 inches indogs, showing the requisite power, activity, courage and symmetry.

体型巨大，包括肩高和身体长度所希望达到的目标尺寸，应该在32~34英寸的范围内，结构坚固、稳定，显示出力量，活跃、勇气和匀称性。

Chapter two proposes the unified form of Hojman"s conservation law and Lutzky"s conservation law. Firstly, the author introduces the general Lie group of transformations that the variations of both the time and the generalized coordinates are considered, derives the determining equation of Lie symmetry for the system, presents a new conservation law, which contains the Hojman"s and the Lutzky"s conservation law as two special cases, and obtains a condition to exclude trivial Hojmans conserved quantities.

第二章，Hojman定理和Lutzky定理的统一形式：首先，引入一般意义下的Lie变换群(即位型变量q_s和时间变量t同时变换)，给出系统的Lie对称性确定方程，提出一个新的守恒律，Hojman定理与Lutzky定理则分别是这个新守恒律在两个特殊情况下的推论，导出一个可排除平凡Hojman守恒量的定理，并分别讨论了Birkhoff系统和非完整系统的Lie对称性和Hojman守恒量，最后，讨论了Hamilton系统的梅对称性与Lie对称性的关系，给出了由梅对称性求Hojman守恒量的方法。

A theoretical study on magneto-structural correlation for binuclear Cu complexes bridged by single N-N group from diazine has been investigated by using broken-symmetry approach within the framework of density functional theory.

在密度泛函数理论的框架下，应用对称性破损方法，研究了以N-N基团为单桥的二嗪类双核Cu体系的磁耦合强度及磁-结构关联。

D-wave superconductor ; The broken time reversal symmetry pairing state ; Rough interface scattering ; Differential conductance.

d波超导；时间反演对称态的破缺；粗糙界面散射；微分电导

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。