平衡网络

Using the sectional force and torque balance method to consider the effects of load force and temperature,provides a more completeness and systematic mathematical model.The working characteristic of bimetal strip is expressed by equivalent network.

采用综合考虑负载作用力及温度影响的分析条形双金属片的截面力－力矩平衡法，给出了较完整系统的数学模型；将双金属片用等效网络表示，用网络分析手段求解温度继电器、热继电器的工作参数；分析了在比弯曲最大的条件下各层界面、表面应力关系。

Through drawing an equilibrium diagram with diagonal branch using independent path method, the instability of airflow in diagonal branch can be seen clearly.

应用独立通路法画出含有角联分支的通风网络平衡图，可以直观地看出角联分支风流不稳定的变化情况，从而为研究角联分支对通风网络的影响提供更有效的方法。

Ventilation network equilibrium diagram has superiorities in quantitative and intuitional reflecting the topology relation and various properties of ventilation network.

通风网络平衡图在定量、直观反映通风网络的拓扑关系及各种性质方面，具有优越性。

Since the load of the node is proportional to the ID space that the node is responsible for, the ISLB algorithm distributes ID space based on the node capacity. Because the load of the node also increases with the number of fan-in edge of the node, the LSLB algorithm distributes the load by redirect the fan-in edge of the node. Both the ISLB algorithm and the LSLB algorithm are able to balance the load efficiently.

在结构化对等网络中，对等节点的负载与该节点所负责的ID空间的大小成正比，ISLB算法按节点的处理能力分配ID空间；在另一方面，由于节点的负载随该节点入度数的增加而增加，LSLB算法统计节点各入度的负载和节点的总负载，并通过入度的转移使对等网络负载平衡。

Utilizing the theory of Lur\'e system,the paper studies the practical synchronization of the system composed by nonidentical cells coupled through quorum sensing.This type of synchronization,which implies the dynamics of each cell is similar but with small difference,is a common kind of phenomenon.

本文利用相约化方法将振子网络的状态方程转化为相应的相方程，然后通过对其相方程进行分析，证明了耦合极限环振子网络在很弱的平衡耦合下就可以实现相同步。

The RS-485 STANDARD permits a balanced transmission LINE to be shared in a party LINE or multidrop mode. As many as 32 driver/ RECEIVER pairs can share a multidrop network.

RS-485允许一条平衡传输线共享一条公共电话线或使用多节点模式，一个多节点网络可以有多达32个节点共享一个多站点网络。

Structure for the set of equilibrium points of the network is studied in detail.

详细讨论了网络的平衡态集合的结构并建立了平衡态集合构造定理。

Beijing environmental problems hold severe, and atmospheric and water pollute, soil and water loss, hot island and yawp are leading problems,and take on territorial characteristic. Based on research on relativity between urban forest and these environmental problems, urban forest can effective improve environmental quality in Beijing. And for the aim of improve environmental quality, Beijing forest overlay should attain 35% at least in citywide range, and local-areas being severe environmental problem should be provided with higher forest overlay.5. Through the study on urban forest needed capacity, Beijing's forest coverage is up to par in citywide range, but montanic forest coverage, plain covered with trees and average forest area are lacking, and CO2 and O2 balance is incapable;form the point of heat and balance CO2 and O2 balance,urban forest the city zone and suburb is lack. There is urban forest developmental potential space,but the city zone and suburb area need be compensated form urban forest in circumjacent region.6. On the based of the above results and ecological network system, the author drived whole region into city area, plain and mountain area are needed at the point of planning thoughts of running-through forests and water .

根据城市森林与北京市主要环境问题的相关性分析，城市森林在改善这些环境问题中具有重要的作用，为有效改善这些环境问题，整个北京市域范围内森林覆盖率至少达到35%，并且分布比较均匀，环境问题严重的局部区域需要不同程度增加森林覆盖率。5、通过对北京市城市森林需求量研究发现，虽然在市域范围内北京森林覆盖率达到了国家标准，但是山区森林覆盖率、平原林木覆盖率、城区人均森林面积不足；从区域热平衡和碳氧平衡角度分析，城区和郊区不能满足本区域的城市森林需求量，虽然北京市城市森林具有一定的发展潜力，整体上基本可以满足城市需要，但是这些区域需要依靠周边区域城市森林的补偿。6、根据以上的研究结果，以中国森林生态网络体系建设的点、线、面布局理念为指导，以&林网化——水网化&作为优化理念，将北京市整个市域划分为城区近郊区及其辐射区域，平原区和山区三大区域，依据三大区域特点进行城市森林布局优化。

At first, this paper gives the brief introduction of the history and present status of accelerometer and its testing technology, the working principium and math model of the liquid floated pendu-lous accelerometer, and then, decides the binary width pulse force retrim loop as the design proposal of testing system, researches the transfer function of every part in the system emphasizly, analyses the stability of the whole accelerometer testing system from the angle of control theoretics by the open loop transfer function of system, and designed the correcting net, analyses the basal problems such as resolution, sampling restraint, precision and so on, designs the hardware testing circuits such as preamplification, band-pass filter, alternating amplifier, phase sensitive demodulatorn, pulse-width modulation, frequency scale circuit, moment current generator. Finally, using the graphics program language LabV-IEW which is designed for testing field especially by NI accomplishes the solfware design of testing system,realized the testing functions.

首先对加速度计及其测试技术的发展历史和现状，液浮摆式加速度计的工作原理和数学模型等作了简要的介绍，然后确定了以二元调宽脉冲再平衡测试回路为设计方案，并从控制理论的角度进行了分析，着重研究了系统中各部分的传递函数，利用系统开环传递函数分析了系统的稳定性，同时设计了系统的校正网络；分析了二元调宽脉冲再平衡测试回路的分辨率、采样约束以及测试精度等基本问题，并按照系统分析的结果设计了包括前置放大、带通滤波、交流放大、相敏解调、脉宽调制、频标电路以及力矩电流发生器等测试系统各部分硬件电路，验证了电路的正确性，最后按照测试系统的要求，采用了美国NI公司专为测试领域所开发的虚拟仪器工具——LabVIEW作为测试软件开发工具，利用该图形化编程语言完成了测试系统软件部分的设计，实现了测试功能。

Effects: Can balance oil secretion and the PH value of the skin, clean up dirt on the face, contract largened skin pores, and form an elastic moistening network over the skin to relieve dryness and restore soft, fair, clear skin.

功效： 能平衡油脂分泌，清除残留在脸上的不洁物，平衡PH值，有效紧致毛孔，有肌肤表面形成弹性活水网络层，软化缺水，干燥的肌肤，使肌肤回复白净玉润，展现晶莹透彻的肤质。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。