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principles of selecting
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     In the first place,he points out the importance of vocabulary and the principles of selecting vocabulary,and then studies in particular what to teach and how to teach about vocabulary and in the end he demonstrates the commonest technique of vocabulary teaching.
     首先指出词汇的重要性和选词原则 ,随后着重研究词汇教什么和怎样教 ,最后示范词汇教学中最常用的呈现技巧
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  “principles of selecting”译为未确定词的双语例句
     Some indications and comparisons were carried out for the standards API610, ISO5199 and ANSI B73.1M/B73.2M. The principles of selecting these standards in the engineering practice were proposed.
     本文对石油、化工离心泵常用的API610、ISO5199、ANSIB73.1M/B73.2M等标准,作了说明和比较,并对实际生产中如何选用以上标准作了建议。
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     Principles of Selecting Flux for Growth of LiB_3O_5 Crystals
     生长Li_3BO_5晶体的助熔剂选择
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     Besides, the writer stresses the elementary principles of selecting songs, and the strategies and methods of cultivating humanistic spirit in“the seven-step approach”of song teaching in the senior middle school, and the concrete application in the classroom.
     另外,本文还着重阐释了歌曲选择应该遵循的原则,如何通过“听说读写赏唱演七环法”在高中英文歌曲教学中培养人文精神的策略与方法,以及如何在课堂教学不同的教学环节和语言教学的不同层面上的具体应用。
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     In view of the interactions of gases, polymeric membrane, carrier and water, the principles of selecting facilitated transport system, polymeric material and carrier were proposed.
     通过分析待分离气体、高分子基材、活性载体以及水的相互作用,本文从促进传递体系的选择、高分子基材的选择以及载体的选择等几个方面提出了一些原则以指导CO_2固定载体膜的研制。
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     Suggestions on the Principles of Selecting and Engaging Political Teachers in Junior Middle Schools
     初中思想政治课教师选用原则及建议
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     principles.
     2、系统论的整体原理。
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     The principles of G.
     介绍了G.
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     Principles of Translation
     论翻译的原则
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     basic principles;
     基本原理 ;
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     selecting the media;
     媒体的选择与组合策略 ;
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  principles of selecting
The mechanism of underwater earthquakes and tsunami wave generation in the Azov Sea-Black Sea region is studied, and theoretical principles of selecting simulation models are elaborated.
      
Principles of selecting reference soils for the Red Data Book of Russian Soils
      
Principles of selecting electrolyzer currents to obtain gaseous chlorine in a static chlorinator were recommended.
      
The principles of selecting a suitable approach, techniques and tactics of removing brain tumors from their specific compartments will be described.
      


In this paper, different from the thermal efficiency consideration as reported in the recent literatures (1, 2, 3, ), an exergy analysis of the ordinary solar thermal power system is presented. It is found that the exergy loss is predominant in evaporator of the system. A way of "sectional matching" is thus suggested to minimize the loss of available energy due to heat transfer temperature drop. The exergy efficiencies of the solar collectors and the second loop system are discussed in detail. The numerical...

In this paper, different from the thermal efficiency consideration as reported in the recent literatures (1, 2, 3, ), an exergy analysis of the ordinary solar thermal power system is presented. It is found that the exergy loss is predominant in evaporator of the system. A way of "sectional matching" is thus suggested to minimize the loss of available energy due to heat transfer temperature drop. The exergy efficiencies of the solar collectors and the second loop system are discussed in detail. The numerical comparison with the data of reference (1) is given. It is shown, by adoption of sectional matching, not only the exergy efficiency of the second loop system can be increased, but also the collectors can be operated in even more preferable temperature ranges, so that the exergy efficiency of the whole system could be increased about 10-25%, while the total surface area required for the collectors decreased 10-25% correspondingly, and thence the capital cost of solar thermal power system could be reduced by 6-13%. Various factors have been discussed. Principles of selecting the main parameters of the sectional matching system have been given finally.

近年来有些文献[1,2,3]从热效率的角度讨论了常规太阳能动力装置的经济性,本文则与此不同,分析了它们的效率,从中发现蒸发器的损失在二次系统中是主要的。为此建议了一种“分段匹配”方式,以减少由于传热温差引起的可用能损失。本文详细讨论了这种装置的集热器和二次系统的效率,并与文献[1]的数据进行了计算比较。计算表明,由于采用分段匹配方式后,不仅二次系统的效率可以得到提高,而且还能使集热器在较合适的温度范围下工作,因而使整个太阳能动力装置的效率较常规方式的可以提高10%~25%,集热器面积相对减少10%~25%,设备投资相对减少6%~13%。本文还讨论了各种影响因素。最后给出了分段匹配时一些主要参数的选择原则。

The author mainly deals with the principles of selecting and commenting the type of retarders and the various requirements for the evaluation of master, group and tangent retarders in the paper. The performance and the test method of car retarders are discussed as well. At the same time analysis and comparison of the existing car retarders in our country are made with respect to the technical and economical aspects. The author recommends that in our marshalling yards the weight-proportional hydraulic retarder...

The author mainly deals with the principles of selecting and commenting the type of retarders and the various requirements for the evaluation of master, group and tangent retarders in the paper. The performance and the test method of car retarders are discussed as well. At the same time analysis and comparison of the existing car retarders in our country are made with respect to the technical and economical aspects. The author recommends that in our marshalling yards the weight-proportional hydraulic retarder be developed as the main type and holds that of the four evalued retarders in our country, ty pe 7501 is the better one for tangent retarder in various hump yards.

本文主要阐述选用和评价减速器的原则,对目的制动和间隔制动减速器的不同要求,车辆减速器的性能与测试。同时对我国现有车辆减速器的技术经济指标进行了分析与比较。建议我国铁路编组站应以发展液压重力式减速器为主。并提出在我国已鉴定的四种车辆减速器中,以7501型车辆减速器更适于在编组线內作目的制动用。

Foil bearing, a newly developed gas bearing, has attracted wide attention because of its low requirement in technology, durability and simple construction,and,especially its exceeding stability at high speed.This paper points out the technical background of foil bearing development, its characteristics and scope of application, and deals synthetically with the results of the test of three-segment foil bearing carried out in recent two years.Finally, analyses are made of the theory of foil bearing lubrication...

Foil bearing, a newly developed gas bearing, has attracted wide attention because of its low requirement in technology, durability and simple construction,and,especially its exceeding stability at high speed.This paper points out the technical background of foil bearing development, its characteristics and scope of application, and deals synthetically with the results of the test of three-segment foil bearing carried out in recent two years.Finally, analyses are made of the theory of foil bearing lubrication and the principle of selecting design paramater.

近年来发展起来的一种新型气体轴承——薄膜轴承,由于其工艺要求低、寿命长、结构简单,更突出的是在高转速时有极好的稳定性,从而引起各方面的注意。本文指出薄膜轴承发展的技术背景,其特点和适用范围;并对二年来关于三弧型薄膜轴承试验结果进行初步的综合性评述。最后分析了薄膜轴承的润滑机理和设计参数的选择原则。

 
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