查询词典 symmetry

The other technique was so called "Constraint Induced Movement Technique" to apply a shoe lift or wedge under the stronger limb, providing a compelled shift of the body weight onto the paretic limb to increased ability of weight bearing. This technique helps patients achieving symmetry of stance and weight bearing and overcoming the learned disuse mechanism. Therefore, the purpose of this study was to investigate the effect of 5° lateral wedge on non-paretic limb improving symmetry of stance and weight bearing for stroke patients.

另外有一种技巧和方法为强迫诱发运动，在健侧使用鞋垫，强迫病患把身体的重心移到患侧去，藉此增加患侧脚承载的能力，研究有使用加高型或外侧楔型的鞋垫，目的都是要使中风的病患能有较对称的站姿及两脚有较对称的重量承载比例，如此一来可以强迫患侧使用更多，进而克服学习废用机制，上述研究多为急性期病患的探讨且多是观察当下的影响及效果，因此我们想利用外侧楔型鞋垫的帮助，藉由在健侧脚较长时间的穿著，看看对於慢性中风病患的站姿控制所造成的影响。

The exact invariants of the symmetry for the system without perturbation are given. Perturbation to weakly Noether symmetry is discussed and the adiabatic invariants of the perturbed system are obtained.

给出了未受扰动系统的弱Noether对称性导致的精确不变量，讨论了受扰动后系统弱Noether对称性的摄动，并得到受扰动后系统的绝热不变量。

Preformed malleable dental crowns with a side-generic external shape with a plane of symmetry in the facial-lingual direction and/or a plane of symmetry in the mesial-distal direction.

具有在颊舌方向上的对称面和/或近远中方向上的对称面的侧面通用外形的预制的可煅的牙冠。

Thirdly, according to the development of the frozen soil, the coupling model of single freezing pipe of axial symmetry of temperature field, stress field and moisture migration is put forward firstly. Then, by means of the progressing principle of potential field, the coupling model of temperature field, stress field and moisture migration which is under the condition of the multi-freezing pipes is extended. At last, the energy balance equation, stress balance equation, quality balance equation, geometric equation, physical equation, initial and boundary conditions etc are adopted to give the analytic solution to the problem of plane axial symmetry of single freezing pipe.

第三，在对室内试验和现场实测结果研究的基础上，分析了土体冻结过程中温度场、应力场、水分场耦合原理，并按照冻土体形成发展过程，首先建立了单一冷源冻结轴对称温度、应力、水分场耦合模型；接着利用势场的迭加原理，将单一冷源情况的三场耦合问题推广到多冷源情况的三场耦合；最后根据能量守恒平衡方程、应力平衡方程、质量守恒平衡方程、几何方程、物理方程、初始及边界条件，解出了单一冷源平面轴对称问题的解析解。

This article introduced the first human understanding of the nature of the process and the status of knowledge of the universe, from the philosophical point of convex - concave symmetry of the difficulties faced by humanity, then use the concept of convex - concave symmetry to solve some knotty problems, from a philosophical point of the final for science to lay a good foundation.

本文先介绍了人类对自然界的认识过程和对宇宙现状的认识程度，再从凹凸对称的哲学角度探讨人类所面临的困难，然后用凹凸对称的观念来解决某些疑难问题，最后从哲学的角度为科学打下一个良好的基础。

The calculated and experimental results of phonon structure fit well in the vicinity of the high symmetry point, while in that of low symmetry point X,the calculated results are higher than the experimental data, which results in the frequency shifts in the phonon density of states.

发现在高对称q点附近，声子结构的计算与实验数据符合很好，而在对称性较低的X点附近，计算结果偏大于实验数据，导致了声子态密度计算结果"频移"现象的发生。

As for as the two-component WKI equation, symmetry reductions and similarity solutions which correspond to an optimal system of its Lie point symmetry groups are given systematically.

基于对称群理论，这一部分主要研究包括WKI系统在内的几个微分方程的对称及其在对称下的相似解。

We also find that the metal-to-semiconductor transition can be driven by squashing the armchair nanotube along any direction. In case one starts with squashing the tube along a direction that preserves the mirror symmetry, all that needs to be done is to squash the tube to a larger extent, to a point where spontaneous symmetry breaking occurs.

我们并且发现沿任何方向压缩 armchair 碳纳米管都能够使其发生金属-半导体转变，即使我们在开始压缩碳纳米管时保持了其镜像对称性，我们所需要做的只是更大程度的压缩碳纳米管，直到出现镜像对称性的自发破缺。

The second milestone was the development of bilateral symmetry ( two halves of the body mirror each other ) with an identifiable head , in contrast to radial symmetry ( symmetrical in a ray pattern from the center ), for example , jellyfish .

第二个重要事件是动物身体进化成两侧对称，并出现明显的头部组织。当然也有例外，例如海蜇这种生物就是径向对称（即对称点在身体中心，呈放射对称）。

Lie symmetry, Noether symmetry, invariant, relative motion, singular system, discrete mechanics

中文关键词 Lie对称性， Noether对称性，守恒量，相对运动，奇异系统，离散力学

Objective To investigate the effects of interleukin-1 β converting enzyme gene on the biologic characteristics of ovarian cancer cells.

目的 探讨白细胞介素-1 β转换酶的表达，对卵巢癌细胞生物学特性的影响。

Campylobacter: This illness is the most commonly identified cause of diarrheal illness in the world.

弯曲：这种病是最常见的原因查明腹泻病，在世界上。