查询词典 role model

The theory of accretion disks are important for many astrophysical phenomena, including Quasars, active galatic nucleic, X-ray binary stars, and young stellar objects. The most important branch of accretion djsk theory is the stability properties of djsks. It is widely considered that the luminosity variations of various astronomical objects are associated with the instability of accretion disk. The viscosity plays an important role in the accretion disk theory, and magnetic field exists commonly in astronomical phenomena. A more realistic analysis of the stabihty of the accretion disk should include both the radjal and azimuthal perturbations because of the strong shear of viscous flow.In this paper, according to the luminosity Variations of Various astronomical objects, we study the radial-azimuthal instability of an isothermal with magnetic field. We find that the radial and azimuthal fields B〓,B〓 are mainly responsible for enhancing the instability of the magneto-acoustic modes and non-axisymmetric modes,and that pulsational oscillations are larger in the radial than in the Z direction. The model may be useful in explaining the periodic light variation of FU orionis and. T Tauri stars.

在许多天体物理现象中，例如活动星系核，X-射线双星和年青的恒星理论中，吸积盘理论起着重要的作用，而吸积盘理论中的一个重要分支是吸积盘的不稳定性理论，普遍认为活动天体的周期，准周期光变现象与吸积盘的不稳定性有关，在吸积盘理论中，粘滞起着重要的作用，而磁场是天体物理中普遍存在的现象，对于几何薄吸积盘不稳定性分析，由于强剪切流的缘故，应该包括径向和环向扰动两个方面，本文结合天体物理中的各种周期，准周期光变现象，研究了含磁场的等温薄吸积盘的径向-环向振荡不稳定性，结果表明：磁场的径向和环向分量对磁声模和非轴对称模的不稳定性的增加起着主要的作用，且径向振荡大于轴向振荡，所得结果有利于解释FU Orionis和T Tauri Stars的周期光变现象。

Furthermore, the consensus-based lawmaking model of international conventions as well as the construction and application of international legal documents determines that territorialism is none the less playing its role.

此外，有关国际公约的一致同意的立法模式以及国际法律文件的解释与适用决定了知识产权地域性原则依然发挥作用。

Cellular Automata in the development process of the "Game of Life" is a typical model of cellular automata theory research has played a significant role in promoting, which is considered the development of cellular automata as a milestone in the history of.

在元胞自动机的发展过程中，"生命游戏"这个典型模型对元胞自动机的理论方法的研究起到了极大的推动作用，它被认为是元胞自动机发展历程中的一个里程碑。

The way we perceive objects and beings in cinema, of course, can be deceiving and manipulative (e.g., a repeated trick of zooming out from the landscape of a city to the revelation of that city being a tiny model), which is why this first definition of indexicality takes a pertinent role.

就如同我们熟悉的某些简单的东西如桌子或埃菲尔铁塔的框架，这类图像材料，这就是现实生活经验中我们所知道的电影成像。

To resolve this problem, we present a two dimensional role-based access control model.

为解决此问题，本文提出基于二维角色的访问控制模型。

This dissertation, based on the case of world-class enterprises-McDonald's China, try to reveal the important role of labor relations in operation of enterprises and how to help enterprises to reach the ultimate goal, through the analysis of McDonald's China labor relations model and practice.

本文以世界一流企业麦当劳在中国的公司为例，力图通过分析麦当劳中国公司的劳资关系的模式和实践，揭示劳资关系在企业运作中的重要作用，如何协助企业达成企业的最终目标。

Because the township/town government plays a dominant role in the relationship, the first step in the construction of the model is to unshackle the old management function and mode of the township/town government. It should implement its administration macrocosmically and indirectly, and through economic and legislative measures. It should respect villager democratic rights and push ahead democratic progress in rural China.

在乡政府和村委会的相互关系中，乡政府无疑处于主导方面，因此，要实现"乡政村治"的理想关系模式，首先，乡政府必须转变旧的管理职能和管理方式，学会用宏观的和间接的方式以及经济的、法律的手段来实施行政管理职能，同时切实尊重村民的民主自治权利，推进农村民主政治建设进程。

However, the role of inactivation gate of sodium channel is not clear. In present study, single fibre recording in vivo from dorsal root on chronically compressed DRG model was used. We analyzed the characters of ISI series of oscillation firing of type A neurons induced by veratridine, an inhibitor of inactivation gate of sodium channel.

本研究在大鼠背根节慢性压迫模型上，利用在体单纤维记录方法，观察与分析Na通道失活门抑制剂藜芦碱引起受损背根节A类神经元放电ISI序列发生的变化特征，为了解Na通道失活门与放电型式的关系以及进一步探索放电时间型式与疼痛的关系奠定基础。

In this paper,the basic feature of particle system is analysed,the property model of coal stream particle is established according to its characteristics and moving mode,and the coal stream movement is simulated with particle system,which plays an important role in assuring the fidelity and integratity of 3D virtual coal washery scene.

本文分析了粒子系统的基本特征，根据选煤厂中煤流系统的特点和运动形式，建立了煤流粒子的属性模型，用粒子系统实现了煤流运动的模拟，对保证选煤厂三维虚拟场景的逼真度和完整性具有重要意义。

The immuno-inflammatory reaction in the model lacrimal gland is most likely leading to xerophthalmia, in which, NFκB p65 and NOS2 play a key role.

去势雄兔干眼症模型泪腺组织中的免疫炎症反应可能是导致干眼症的主要发病机制，NFκB p65和NOS2在这一过程中可能起主要作用。

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。