介绍了高空台空气降温系统技术改造的必要性和改造的原则。
This paper introduces the necessity of technical improvement and the design principles of an air cooling system for simulated altitude test facility.
提出了通风机改造的必要性，列出了风机改造的原理及注意事项。
The necessity of fan transformation is put forward. The principle and cautions of fan transformation is listed.
研究了目前医院网络系统的现状，提出了网络系统改造的必要性。
Researched the status of the hospital network system, and suggested the necessity to reconstruct the network.
通过对洗煤现状的分析，阐述了洗煤浮选、压滤系统改造的必要性。
The article gives an analysis on present situation of coal washing, clarifies the necessity to give a reform on present floatation and pressure filtration system.
介绍了外火箱矩形竖窑进火孔改造前的使用情况以及改造的必要性；
This article introduces the application of fire entry hole of rectangle kiln with outer fire box before reconstructing and the necessity of reconstruction.
文中介绍了轮一联合站改造的必要性和目的，介绍了该站的生产现状。
This paper introduces the necessity and purpose of reform about the Lunnan first central gathering stations, as well as the production of the status of the stations.
就当前普通物理实验领域普遍存在的问题作了分析，提出了改造的必要性。
This thesis analyses the problems that exist in the fields of current normal physics experiment, indicated the necessity of improvement.
介绍了马钢一铁总厂抽风环冷机存在的问题及进行整体优化改造的必要性。
Existing problems in the annular cooler at the No. 1 General Ironmaking Plant of Masteel and the necessity of overall optimization reformation are presented.
介绍了范各庄矿业分公司选煤厂集控系统进行改造的必要性、改造内容及效果分析。
The technical transformation necessity, content and effect analysis in coal preparation plant, Fangezhuang Coal Mining Industry Branch Co.
介绍了范各庄矿业分公司选煤厂集控系统进行改造的必要性、改造内容及效果分析。
The technical transformation necessity, content and effect analysis in coal preparation plant, Fangezhuang Coal Mining Industry Branch Co. are introduced in this paper.
以辽宁省为例，探讨了我国城市老燃气管网改造的必要性、存在的问题及改造措施。
Taking Liaoning Province for example, the necessity for reconstruction of municipal old gas network in China, the existing problems and the reconstruction measures are discussed.
简单论述了抚顺乙烯化工有限公司聚丙烯装置改造的必要性，并且对改造确定方案。
The necessity of technical transformation of Fushun Ethylene LTD Co. Polypropylene unit was discussed in the paper, and scheme was determined.
本文分析了南京第二热电厂水膜除尘器技术改造的必要性，及由其而产生的社会、经济效益。
The necessity of technique transform to water film dust catcher Nanjing Second Heat and Power Factory and its benefits of society and economic are analysed in this paper.
阐述了杜儿坪矿动力煤仓改造的必要性。给出了改造动力煤仓卸载站的技术方案和施工方案。
This paper expounds the necessity of steam coal bunker reformation in Duerping Mine, and gives the technical scheme and construction scheme of reformation of unloading chamber in steam coal bunker.
介绍鞍山道、松梅街商业步行街在包头市城市、社会、经济、生活中的作用及改造的必要性；
Then to introduce the effect and the necessity of the renewal of the An Shan and Song Mei commercial pedestrian street, in the aspects of city, society, economy and life;
报告认为，非洲需要立即行动起来，而当前全球金融危机凸显了下大力对非洲基础设施进行改造的必要性。
But action is needed urgently, the report argues, and the global financial crisis is underscoring the need for a massive effort to overhaul Africa's infrastructure.
报告认为，非洲需要立即行动起来，而当前全球金融危机凸显了下大力对非洲基础设施进行改造的必要性。
Urgent action is needed, the report argues, and the global financial crisis further underscores the need for a massive effort to overhaul Africa’s infrastructure.
借助图形形象地说明新专业设置与老专业改造的必要性以及依据和时机等，并提出了专业生命周期的概念。
The necessity, as well as foundation and opportunity, of new specialty setting and old specialty reform is explained by the help of graph, and the concept of specialty life-cycle is proposed.
笔者有幸参与其中，并对老城区街景改造的必要性以及如何进行“多快好省”的街景改造设计进行了分类总结。
This paper carries on the classified summary for the necessity of the old city vista transformation and how to carry on the economical design.
概述了哈尔滨市煤气老管网现状及老管网供气存在的问题与隐患，并从技术角度阐述了管网改造的必要性及建议。
Summarizing the problems and hidden troubles of Harbin old gas-pipeline net, expounding the necessary of gas-pipeline net alteration, and advising.
介绍了中国石化北京燕山分公司化工一厂，乙二醇装置的现状。从规模、技术、市场三方面论证了装置改造的必要性。
This paper introduces the current status of Yanshan ethylene glycol plant, demonstrates the necessity of plant modification from aspects of scale, technology and market.
通过对轧辊加工现状的分析，论述了轧辊加工计算机数控化改造的必要性，及计算机数控技术在轧辊加工领域的应用结果。
Through the analysis of roller machining, the paper discusses the necessity of CNC reformation in roller machining and its application effect.
对天铁集团炼铁厂管网供氧系统的改造设计必要性和可行性进行了探讨。
The necessity and feasibility of remaking and designing for oxygen-supply tubing net system at Ironmaking Works are discussed.
阐述全低变工艺改造的理论和必要性。
Theory and necessity of all low temperature shift process are described.
本文介绍了交流变频技术在新型纺织设备及老机改造中的应用、交流变频技术应用的必要性、可行性及性价比分析。
This article introduced the application of frequency converters on the novel cotton spinning machines. The necessity, feasibility and cost-performance were analyzed.
简要论述了工厂规划的重要性和必要性，及其对工厂建设与改造的指导作用。
Briefly discussed the importance and necessity of the factory planning, and instructive function imposed on the factory construction and transformation.
分析了流态化闪速焙烧炉由烧重油改烧焦炉煤气的可行性和必要性，介绍了改造方案，探讨了改造后的安全问题。
The feasibility and necessity of replacing heavy oil by coke oven gas for liquid flash calciner are analyzed, the reform scheme is introduced, and the security problems after reform are discussed.
介绍了煤矿企业的现状及引入招标机制的必要性，从而提高了工程技术改造的成功率，节省了资金。
The state of coal enterprise and necessity of joining bids system are introduced. It can increase the success rate in the engineering technology reform and save money.
介绍了煤矿企业的现状及引入招标机制的必要性，从而提高了工程技术改造的成功率，节省了资金。
The state of coal enterprise and necessity of joining bids system are introduced. It can increase the success rate in the engineering technology reform and save money.
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