查询词典 holonomic system

For instance, the public security system usually has the holonomic system, simultaneously the high safety requirements, by now the pure service pattern with difficulty achieved to the digital sensitive information security.

比如，公安系统通常有较完整系统，同时又较高的安全要求，这时纯粹的服务模式难以达到对数字的敏感信息的保密。

Hamilton principle can be used in holonomic system and intrinsical linear nonholnomic system. The formulas of them are unified. Hamiltonian action is stability in intrinsical linear nonholnomic system.

本文将Hamilton原理应用到本质线性非完整系统，首次证明了在本质线性非完整系统中，Hamilton作用量为稳定的作用量；将完整系统和本质线性非完整系统的Hamilton原理从形式和本质上统一起来。

Between the chaos caused by war, the political struggle, the human and the human engage in factional strife, the traditional morality to crush mutually, the majority of people have not been able to accept holonomic system's good education, after with great difficulty reform and open policy, also encounters the organizational reform, comes off sentry duty, the medicine changes, the reform of the housing system and so on and so on, says regarding their this generation of people, the survival, continuously the survival which paces back and forth nearby the low-income level as well as to survive all sorts of endeavors which makes and struggles, is primary coverage which they live, in theirs idea, lives is most important.

战乱、政治斗争、人与人之间相互倾轧、传统的道德观念被粉碎，大部分人未能接受完整系统的良好的教育，好不容易改革开放后，又遭遇体制改革，下岗，医改，房改等等等等，对于他们这代人来讲，生存、一直在贫困线附近徘徊的生存以及为了生存做出的种种努力和挣扎，是他们生活的主要内容，在他们的观念里，活下来才是最重要的。

In order to improve services trade competitiveness and the country competitiveness, China must strengthen the two advantageous factors to generate "leading effect", and at the same time, improve the two disadvantageous factors to weaken "cask effect", because all influence factors are a holonomic system.

因此，中国必须增强"两强"因素以发挥其"龙头"效应、改进"两弱"因素以削弱甚至消除其"木桶短板"效应，以便最大限度提高服务贸易国际竞争力和国家竞争力，此是因为"一个产业的任何一项关键要素出现问题都将伤害其升级的潜力"。

For the relativistic holonomic nonconservative system, a new Lie symmetrical non-Noether conserved quantity is given under general infinitesimal transformations of groups in which time is variable.

[1]浙江理工大学数学力学与数学物理研究所，杭州310018 [2]辽宁大学物理系，沈阳110036 [3]北京理工大学理学院，北京100081研究非完整力学系统的形式不变性导致的非Noether守恒量——Hojman守恒量。

Secondly,the condition under which the Noether symmetry is a Lie symmetry is obtained.Finally,a generalization of Hojman theorem is given and two examples are given to illustrate the application of the result. analytical mechanics ; holonomic system ; symmetry ; conserved quantity

新近出现的形式不变性理论也取得进展[6～8]，文献[9]研究了完整力学系统由Lie对称性导致的Hojman守恒量，本文继文献[9]，研究完整力学系统由Noether对称性导致的Hojman守恒量。1 系统的Noether对称性与守恒量完整力学系统的运动微分方程为 Es=Qs (s=1，…，n)(1)其

Operations are given and testified in this paper. The research methods of intrinsical linear nonholonomic dynamics are similar to those of holonomic dynamics.The rationality and equivalence of Chetaev model and Vacco model in the intrinsical linear nonholonomic system are testified from the mathematic and mechanical aspects. The essential reason is the nonlinear property of intrinsical nonlinear nonholonomic constrain that bring on Chetaev model and Vacco model inequivalent. Chetaev model is a linear approximate method in intrinsical nonlinear nonholonomic system. Vacco dynamical equations are not satisfied to the ideal constraint force conditions, but it gives a significative ponderation on the realizations of intrinsical nonlinear nonholonomic constrain.

本文比较研究了一般非完整系统的Chetaev模型和Vacco模型，首次从力学和数学的角度论证了这两种模型在完整系统和本质线性非完整系统中的合理性和等价性；同时给出了在本质非线性非完整系统中，Chetaev模型和Vacco模型不等价的根本原因，是由本质非线性非完整约束的不确定性非线性本质所导致的；指出在本质非线性非完整系统中，Chetaev模型是一种线性近似的结果，Vacco动力学方程虽然不满足约束力的理想性质，但是为我们研究本质非线性非完整约束的物理实现提供了有益的思考。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。