现场控制

Based on the results of underground observations and model tests of simulated materials of immediate roof, it is expounded that fragmented roof belongs in cataclastic rock mass,and its caving characteristics is clarified in this paper too.

本文根据直接顶岩体冒顶现场实测和相似模拟实验结果，阐明综采面破碎顶板的碎裂岩体属性与冒顶特征，并建立碎裂岩体冒顶力学模型，深入研究冒顶本质原因和控制原理。

How to realizeprocess control of Furan resin-bonded sand self-curing technology has been briefly expounded combining practi- cal production with several sections such as raw material preparation, mixing sand, molding, coremaking,recla- mation and technological equipment design which have been depended upon to work out a series of document of techndogy and technique of furan resin-bonded sand self-curing process operational reules, technology regulations and acceptance standard of raw materials to play important role in guiding production on the spot.

本文结合生产实际情况，从原材料的准备、混砂、造型、制芯以及再生过程和工艺工装设计等几个方面，简要阐述了如何对呋喃树脂自硬砂生产工艺过程进行质量控制，并且在此基础上制订了工艺操作规程和工艺守则以及原材料验收标准等一系列有关树脂自硬砂的工艺技术性文件，对现场生产起了重要的指导作用。

The MPCR uses either a DeviceNet or Profibus network protocol to control up to eight Miniature Electropneumatic Transducers from one fieldbus node.

该多重PCR方法使用或Profibus DeviceNet的网络协议来控制现场总线从一个节点到8微型电子气动转换器。

Formerly a fire locator that carry arrives the endmost fire fight mutually the equipments of the connection action the control device, a fire reports to the police automatically the main function of the system is in a fire early on time probe into a fire information, make a noise, the light reports to the police, combining auto or move to start the spot extinguishes fire the facilities.

从前端的火灾探测器到末端的消防联动控制装置，火灾自动报警系统的主要功能是在火灾初期及时探测火灾信息，发出声、光报警，并自动或手动启动现场灭火设施。

A dynamic examination device is to examine the hydrol ogical data acquisition system and the gate control system. It does much good to the quality and reliability of these two systems being about to the spot.

丁强 设计一套水情和闸控系统动态检测装置，以检测即将在现场使用的水情测报系统和闸门控制系统，对提高这类系统的质量和可靠性大有好处。

It not only avoids the sensitivity to the model perturbation and the noncausality in the decoupling procedure of time-delay systems, but also is easily understood and accepted by the application engineers with its clear physical concept. Thus, it is a promising control approach to wide applications.

该方法不但克服了传统的精确解耦方法对模型摄动的敏感性及时滞系统在解耦过程中的非因果性问题，而且物理概念清楚，易于为现场工程师理解和接受，是一种具有广泛应用前景的控制方法。

First, from the point of view of production and management, the importance for developing TTU is pointed out.the status in quo of technology,The direction of progress,The demand of practical and fundamentality in Distribution Automation are analyzed for Transformer Terminal Unit. The function of equipment and technical specification which meet demand of practical duty are indicated; Second, the scheme of synchronous sampling,quasi-synchronous sampling,non-integer cycle sampling,nonsynchronous sampling and algorithm are analyzed in detail. Then,the scheme of nonsynchronous sampling and multi-chunnel is ascertained. Moreover, the method of disposal sampling data for increasing precision which calculate the number of sampling per cycle dramatic by searching zero is introduced. The technique for analyzing data,stating data,storage data for Electrical Power Quality and control scheme for compensation capacitor are explained also. Finally, The scheme and structure of hardware,key circuitry using 80C196 singlechip,the scheme and ideology of software and flow chart of part software is introduced simply.

文中首先从电力生产、管理角度出发，指出了研制配变监测终端的重要意义，分析了配变监测终端的技术现状、发展趋势、现场需求以及在配网自动化中的基础地位，提出了满足实际运行要求的装置功能、技术要求；然后对目前常用的同步采样、准同步采样、非整周期采样、非同步采样的方案和算法进行了详细的分析、比较、筛选，确定了非同步采样和顺序采样的方案，并提出了一种寻找过零点从而动态计算每周采样点数的提高精度的采样数据处理方法，文中对装置中电能质量分析、统计、存储的方法以及补偿电容器的控制方案和投切原则也做了重点说明；最后，对应用80C196单片机系统研制的装置的硬件方案、结构以及关键电路和软件设计思路、方案、部分主要软件模块的流程图做了介绍。

A case ofapplication of CAN bus on the distributed automatic system ofsubstation is illustrated.To meet the need ofautomatic controlsystem ofsubstation,a network is necessity because ofthe distributed control units ofthe substation.To shortenthe developed period of the system,an interface bridge between the RS232 and CAN bus is made.The result oftest run shows thatthe requirements ofsystem can be satisfied by the project.

摘 要：对一个把CAN总线应用到分布式变电所自动化系统的例子进行了分析，对于分布式变电所自动化系统来说，通信网络的效率、安全性和实时性具有重要意义，在实际工作中，通过在现行测量、控制和保护单元外增加一个RS232和CAN总线之间的转换器，构成变电所自动化系统的现场总线网络，试运行情况表明：该方案完全能满足系统的要求。

Methods According to the ecological characters of, Aedes albopictus ,and the structure of CDC ovitrap and housefly trap,we invented a Mosqovitrap in which the mosquito would be attracted to oviposit,and would be caught.

方法根据白纹伊蚊的生态特点和美国疾病预防与控制中心诱卵器监测方法，结合捕蝇笼结构特点，设计具有引诱伊蚊产卵的器械，并在实验室及现场进行验证。

Methods According to the ecological characters of Aedes albopictus , and the structure of CDC ovitrap and housefly trap, we invented a Mosq ovitrap in which the mosquito would be attracted to oviposit, and would be caught.

根据白纹伊蚊的生态特点和美国疾病预防与控制中心诱卵器监测方法，结合捕蝇笼结构特点，设计具有引诱伊蚊产卵的器械，并在实验室及现场进行验证。

Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.

在对危险的南部地区访问时，他斥责什叶派民兵领导人对中央集权的挑衅行为。

In fact,I've got him on the satellite mobile right now.

实际上 我们已接通卫星可视电话了