In the chapter three , we discuss that the repairable queueing system m / g / 1 with two kinds of breakdown states ( normal and abnormal ) . normal breakdown is caused by the life termination of service station and abnormal breakdown results from the operation lapse 第三章讨论了服务台具有两种故障状态(正常和异常)的m g 1可修排队系统。其中正常故障状态是由于服务台的寿命终止而引起系统失效；异常故障状态是由于服务员操作失误等其他原因而造成系统失效。
Airline operational planning is very hard and important work , which quality and efficiency is concerned with the safety and benefit of airline operation . the essence of this work is optimizing the configuration of primary airline resources by precise organizing and planning 航空公司的生产计划编制是一项非常艰巨而重要的工作，其实质在于通过周密的组织和精确的计划，实现各生产资源要素的优化配置，它的质量和效率关系到生产运营的安全、正常和效益。
In the planning of electric power network , several aspects have to be considered , such as the load forecasting , substation and network planning , reactive power install , reliability analysis in normal and emergency , short circuit current analysis , distribution automation , and so on 配电网规划是一个覆盖面很广的课题，其主要研究内容包括：电力负荷预测、变电站优化、网架规划、配电网潮流计算、无功规划、正常和故障状态下的可靠性分析、配电网自动化等。
The operational characteristics with the different operational parameters , with different terminal cooling load of air conditioning system , with different heat exchange characteristics between underground u - tube pipe loop and soil , etc . have been studied . the operational characteristics of gshps within starting period , normal period and the period of variable operation patterns under different seasonal conditions has also been studied 研究热泵机组运行参数变化、空调末端负荷变化和地下埋管换热器变化时土壤源热泵系统的运行特性;开展不同季节和不同工况土壤源热泵的启动、正常和变工况运行特性的研究。
Through studying it is shown that in chagan sag , the geothermal gradients in the center are higher than those around the sag margin and major factors influencing the characteristics of temperature field distribution are the property of geotectogenesis and the differences in tectonic portion , lithology and underground water behaviour ; there are three types of mudstone compaction , i . e . normal compaction , undercompacition and overcomepaction ; there are two pressure systems in sandstone reservoirs , i . e . normal pressure and negative pressure systems and the strata ' s being uplifted and denuded is the key factor leading to the formation of the negative pressure system in reservoir ; and the distinctive temperature - pressure field characteristics in the sag are possessed of important petroleum geological significance in hydrocarbon source maturity , hydrocarbon generation , widening on oil and gas exploration domain and selecting exploration targets , etc 研究表明，查干凹陷中心的地温梯度高于凹陷边缘，大地构造性质及所处构造部位、岩性与地下水活动的差异是影响凹陷地温场分布特徵的主要因素；泥岩压实存在正常压实、欠压实和过压实三种类型，砂岩储层段压力类型可分为正常和负压两个系统，地层抬升剥蚀是导致储层负压系统形成的主导因素；凹陷独特的温压场特徵对烃源岩成熟、油气生成、油气勘探领域的扩大及勘探方向的选择等具有重要的油气地质意义。
Maintaining a normal and sound economic , trade and financial order calls for not only a perfect macro - economic management system as well as a sound system of economic operations , it also calls for strengthening regional and international economic contacts and cooperation , so as to jointly create a stable and secure external economic environment 维护正常和良好的经济、贸易和金融秩序，不仅要有完善的宏观经济管理体制和健全的经济运行体系，而且要加强地区和世界的经济联系与合作，共同创造稳定、安全的外部经济环境。
If the risk of a heart attack or stroke is very low as in young people , without other risk factors such as high cholesterol or smoking ; borderline blood pressure elevation does not pose a significant threat . however , as people become older , or when these other risk factors are present , even slightly elevated blood pressure can present a greater risk 年青人患上心脏病或中风机会较少，如果胆固醇水平正常和没有吸烟习惯，血压稍高也不会造成严重影响。不过，当我们年纪渐大，由于胆固醇增加或其他因素的潜在危机，即使血压轻微上升，影响也可能很大。
3 . the multi - variable , coupling turbine - boiler plant is intensively investigated and with the reference of the routine control method , lqg control strategy is used in the turbine - boiler plant successfully ; moreover the usual fault existing in the unit coordinated control system is researched . the model set for the sensor fault , actuator fault and normal control system is builded . based on adaptive filter technology , a scheme of fault diagnosis and fault tolerant control in the unit coordinated control system is presented （ 3 ）研究电厂汽机?锅炉控制对象，在参考常规控制策略的基础上，采用线性二次型最优控制策略( lqg ) ，实现了对于存在多变量耦合的协调对象的控制；另外对于协调控制系统常见的传感器、执行器的故障进行了模型化研究，建立了系统正常和可能发生的系统故障模型集。
The paper solves the following key problems : on the basis of analyzing the unusual equipment treatment method of the substation , the paper points out the difference between usual and unusual situation , add operating task classification message to show operating regulations . thus the usual and unusual situation can be dealt with in uniform 本文主要解决了以下关键问题：在分析了变电站设备发生异常的处理方法基础上，指出正常和异常的区别，据此确定了加入操作任务类别信息表示操作规则的方式，从而使系统统一处理正常与异常情况。
