微小系统

Thermodynamic properties and mechanism of phase transitions inthe two-dimensional Lennard-Jones Systems are studied by Monte Carlo method. Canonical ensemble Monte Carlo simulations are performed for a wide range of thermodynamic equilibrium states.

为深入研究微小尺度系统的热力学性质和相转变机制，以粒子间通过Lennard-Jones势能作用的2维系统为模型，通过正则系综MonteCarlo模拟细致地考察了气/液相转变区的平衡态参数。

In a system of a certain order or unevenness, small flow can greatly influence the function or behaviors of the system.

在一个有序或不均衡的系统中，很微小的能量流就可以对系统的功能或行为产生很大的影响。

The system applies the high-precise eddy current displacement sensor, virtual instrument technology, special mechanical structure, and high-precise data acquisition system, as well as data processing and analyzing. The results show that the present system has high performance in precision and efficiency.

采用高精度电涡流位移传感器和虚拟仪器技术、合理设计测量机械机构和数据采集与处理系统，使计算机可以精确测量微小位移量，为准确分析数据结果提供了有利的先决条件，使测量系统精度大大提高。

Circuit system used varistor constitute the Wheatstone bridge to collect small changes in voltage, After amplification circuit amplified into A / D converter circuit, the input voltage digital signal after the conversion output AT89S52 conducted by the control and data processing and results in the LCD display.

系统电路采用压敏电阻构成惠斯登电桥来采集电压的微小变化，经过放大电路放大后送入A/D转换电路，对输入电压信号进行数字量的转换后输出，由AT89S52进行系统的控制和对数据的处理并将结果显示在液晶显示器上。

The conventional liquid based RP system used a special designed recoat to scrape resin from one side of the tank to the other to ensure the surface flatness. The scraping procedure will take off extra resin but with a drawback of shear force to the working part. In order to overcome the drawback of the shear force, a supporting structure is necessary to build under the working part.

目前商业化之液态快速原型系统中，大部分使用刮板铺层进行层厚控制的部份，铺层系统铺过工件表面时，微小结构容易受到刮板所产生的剪切力破坏，为了克服剪切力这个缺点，使能制作出具有外悬机构原型时，必须建立支撑结构。

And their fractal figures have been drawn. Meanwhile, to obtain a better visual effect and simulate actual natural scene, software adopts the real color and color palette to enrich figures, and color animated cartoon to change them. To show the self-similarity and infinitive tractility of fractal figures, partial zoom has been made on them. In addition, the software also provides several groups of graphic parameters. Very different fractal figure can be created through slightly changing such parameters.

本文运用分形理论实现多种分形算法，在计算机上生成Mandelbrot集，Julia集，L系统，IFS迭代函数系统等典型的分形图形，同时运用真彩色及调色板技术丰富图形的色彩，实现了色彩动画，使其更真实的模拟自然景物；运用鼠标编程技术实现对图形局部的放大和缩小，体现分形图形的自相似性和无限延展性；提供多组参数，利用分形图形的混沌特性，通过微小的参数变化，生成完全不同的分形图形。

The development of microsystem technology on a vast scale is dependent on manufacturing system that can reliably and economically produce micro components .

微机系统技术大范围的发展依赖于能够经济可靠地制造成型微小单元的加工系统。

Secondly this paper analyzes the research present conditions and development trend of transmitter and miniature wireless in missile at home and abroad thoroughly ,then designs the PCM-CDMA-QPSK system of integrated miniature wireless beacon which based on the technology of CDMA and DUC.

其次，在深入分析和比较国内外弹载发射设备和无线信标技术研究现状的基础上，针对多目标测量的需求，基于码分多址和直接上变频技术原理，设计了PCM-CDMA-QPSK体制的微小型无线信标系统总体，完成了无线信标系统中基带扩频电路的调试，结果表明，基于码分多址的多信标测量方法是可行性，所设计的系统可靠有效。

Sponsored by the Scientific Research Foundation of Harbin Institute of Technology, this dissertation aims to establish microrobot walking in pipe with the diameter of 16mm to 18mm based on abundant of investigation and research work. Different research approaches are implemented, ranging from basis study to unit technology to system. An in-depth research on in-pipe micro locomotive and controller was conducted on the basis of piezoelectric bimorph actuator and the principle of Impact Drive Motion .

本文在&哈尔滨工业大学科学研究基金&支持下，以建立在直径φ16mm～φ18mm的管内行走的微小型机器人及其控制系统为目标，进行了大量的调研和研究工作，采用从基础技术，单元技术到系统集成的研究方法，对基于双压电膜驱动和采用惯性冲击式运动机理的管内移动机器人及其控制系统进行深入的研究。

This paper based on passive vibrating isolation system which is supported by air-spring, presents a system using the horizontal active damper to makeup the fault of traditional isolation platforms, which includes three parts, data acquisition and data processing unit, computer control unit and electromagnetic damper unit.

本文基于以空气弹簧作为弹性支承的被动隔振台座，提出一套包括数据采集处理系统、计算机控制系统以及电磁作动系统三大部分的主动控制概念，以满足即使在振动量级极其微小的情况下，也能实时产生足够的阻尼力，提高微振动控制水平。

Cynanchum Lingtai apricot production in the average weight 65 grams, the brightly-colored fruit, juicy rich, sweet-sour taste, sweet from the nucleolus, when the late Qing Dynasty famous Shaanxi, Gansu provinces, the Qing imperial court Tongzhi tribute for years.

灵台生产的牛心杏平均单果重65克，果实色泽鲜艳，汁多味浓，甜酸适口，离核仁甜，清末时就驰名陕、甘两省，清同治年间曾为朝廷贡品。

Chenopodium album,Solanum nigrum, and Amaranthus retroflexus were very susceptible to the herbicides. Polygonum persicaria and Abutilon theophrasti were relatively less susceptible to the herbicides, and Lycopersicon esculentum was not susceptible to it. The relationship between reduction rates of weed biomass and PPM values of weed leaves 2,4, and 6 days after treatment was established.

供试的6种杂草对该混剂的敏感性存在显著差异：红心藜Chenopodium album、龙葵Solanum nigrum和反枝苋Amaranthus retroflexus对该混剂最敏感，ED90值分别为47.65、71.67和29.17g/hm2；春蓼Polygonum persicaria和苘麻Abutilon theophrasti敏感，ED90值分别为96.91、114.20g/hm2；而番茄不敏感。