微系统

ABSTRACT In this paper, integrated with surface topography, asperity contact behaviour and fluid mechanics, the lubrication of real enginee...

本文结合实际工程表面的形貌特征、表面微凸体接触力学性质和润滑力学性质对粗糙表面的润滑及摩擦特性进行了系统的实验研究和理论分析。

ABSTRACT In this paper, integrated with surface topography, asperity contact behaviour and fluid mechanics, the lubrication of real engineering surfaces and their rubbing behaviour are described in experiment and theory.

本文结合实际工程表面的形貌特征、表面微凸体接触力学性质和润滑力学性质对粗糙表面的润滑及摩擦特性进行了系统的实验研究和理论分析。

Thirdly, hydrodynamic lubrication model for the asperity elastic deformation of the mechanical seals is established, and related calculation methods, as well as software are formulated.

推导和建立了考虑端面密封系统中微凸体弹性变形影响的弹性流体润滑分析和计算方法，并在此基础上编制了相应的计算软件。

The dual-band differential LNA use Inductive source degeneration structure, a matching network is used for the LNA to develop dual-band. The micro-mixer use a matching network shunt and parallel LC elements to develop wide-band matching. The biasing method reduces the"voltage headroom" difficulties inherent to the Gilbert cell, and the mixer linearity can be improved using this biasing method "Charge -Injection"by accurate adjustment of the input MOSFET operating point. The complementary VCO based on 2.5GHz, and tuning output buffer to approach 2GHz/5GHz dual-band for dual-band down-converter with MMIC technology.

其中双频差动低杂讯放大器，本电路用Inductive Source Degeneration 架构，在匹配网上设计，使低杂讯放大器工作在个频带上达成双频带的效果；CMOS 微混频器上采用LC串联、并联电路做匹配，达到宽频匹配的效果，并加入了"Charge-Injection"的方法来改善"voltage headroom"的问题，并同时提高线性度的表现；互补式压控振荡器以2.5GHz为基频的振荡器为出发点，透过电路的调整，以期达成2.5/5GHz的双频带需求，能够完整达成双频带接收机系统。

In this thesis, a binocular stereo vision system is constructed for 3D image reconstruction.

本文的主要目的为发展适用於双目立体视觉系统的三维影像重建理论，并将其应用到微操作系统。

Hot-pressing micro-grain boron carbide materials are used in the control system of space navigation. So they are required to be extremely reliabile.

热压微晶碳化硼材料是用于宇航控制系统的材料，对其可靠性要求极高。

According to the structure and physiological properties of human respiratory system, a micro-robot system based on earthworm creeping motion principle is designed to move freely in trachea and two main bronchia.

摘要根据人体呼吸系统的结构及生理特性，基于蠕动运动原理设计了适于人体气管及左右主支气管内自由移动的微机器人系统。

Bubbler irrigation is one type of the micro-irrigation. It aims directly at apparatus blockade problem of drip-irrigation system in China.

涌泉灌溉技术是针对滴灌系统使用过程中灌水器容易堵塞，以及农业生产管理水平不高而设计的一种微灌技术。

In modern physics research, the calculus of variations has a broad application of law. As a solid mechanics, structural mechanics and computational mechanics of the theoretical foundation, it has important value in theory and practice on the mechanics; Variation method ruled out the perturbation of the restrictions can be widely used in many state-level and the state function in the calculation in the optical; Calculus of variations can be calculated with the parameters, we can guarantee the reliability of the results, can effectively reduce the workload of calculation, It can be said that the applications of calculus of variations are very broad.

在现代的物理学研究中，变分法有着广泛的应用：在力学上，变分法作为固体力学、结构力学及计算力学的理论基础，在理论上和实践上都有重要的价值；在光学上，变分法排除了微扰法的限制，可以广泛应用于诸多定态能级和态函数的计算中；在量子力学的应用中，具有可算出系统的参数，既可以保证计算结果的可靠性，又能有效地减少计算的工作量等的优点，可以说变分法的应用领域十分广阔。

We find that a region of negative specific heat describing the character of gravity also exists in canonical ensemble, which is remarkably distinguished from the result of traditional statistical mechanics that the specific heat must be positive in that ensemble, implying that the gravitating system may also be described by canonical one.

2在正则系综中，我们同样根据广义统计力学对引力Toy模型进行了研究，发现也会出现类似于微正则系综中的负比热现象，这明显区别于传统的统计力学中比热必须非负的结论，从而得出在Tsalllis统计下正则系综也可以描述引力系统的结论。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。