查询词典 theoretical research

Aiming at the problem of heavy duty vehicle engine vibration and noise, this thesis develops theoretical and application research on the vibration and noise control for a 6-cylinder, in-line, four-stroke diesel engine based on modern design theory and technique.

本文以重型车用发动机的振动和噪声问题为出发点，应用现代设计理论与方法对某直列四冲程六缸柴油机开展振动与噪声控制问题的理论和应用研究工作。

Some limitations were pointed out as well. Finally, the conclusion was drawn upon the above analysis and discussion. Major findings, theoretical, methodological and practical implications, recommendations for future research were offered so that Unit Integral English Teaching Approach could be further improved and accomplished in the future high school teaching and more productivity could be brought out to amend the present "high input but low output" English teaching situation in high schools.

最后，以上述分析为基础，得出了实验的结论，具体阐述了实验中的发现、实验所给予我们的理论、方法和实践启示，提出了今后单元整体教学的研究重点和方向，以期使它能够在未来的中学英语教学中进一步得到发展和完善，从而为改善目前的中学英语教学现状发挥更大的效益。

The traditional technology of iron carbide production exists the problem that the reaction time is too long. The research of adding the additive into the ore of the fluid-bed was carried out in order to find the catalyst of this reaction. It was found out that K2CO3 and CaCl2 can be the catalysts of this reaction. The reacting time and equilibrium data in addition of K2CO3 and CaCl2 were examined and were campared with the contrastive experimental results respectively. The theoretical dynamics analysis also reveals that both K2CO3 and CaCl2 can accelerate the iron carbide forming reaction.

摘 要：传统的碳化铁生产工艺存在反应时间较长的难题，为此通过在流化床入炉矿石中配加部分添加剂的还原实验研究，以寻求该反应可能的催化剂，缩短反应时间，提高碳化铁生产效率和经济效益采用CaCl2和K2CO3作为反应的催化剂，利用反应所测数据，与对比实验相比较，并结合动力学分析，得出CaCl2和K2CO3可以加速碳化铁还原反应进行的结论。

Therefore,the research on Kants theory of obligation has great theoretical significance and practical value.

故此，对康德责任论的系统研究和诠释具有重要的理论意义和现实价值。

In this article, we adopted polyvinyl-butyral and methyl cellulose as chemical additives, and carried out research about the bond property of modified mortar in masonry of different walling materials. Its established the test and theoretical basis for the application of modified mortar in masonry buildings.

本文主要研究采用聚乙烯醇缩丁醛和甲基纤维素对普通砂浆进行二级改性后，对不同块材的砌体抗剪性能的影响，为改性砂浆在砌体中的应用奠定试验和理论基础。

"Study on relation between seamounts type and cobalt-rich crusts mineralization" take seamounts from Mid-Pacific Mountains and Marcus-Wake ridge as research objects, aim to discuss differences in crust mineralization for different seamounts type and their mechanism, offer theoretical guidance to present crust ore-finding, ore-delineation and resources assessment.

&海山类型与结壳成矿的关系研究&以中太平洋海山区和马尔库斯-威克海岭的富钴结壳资源调查海山为研究对象，旨在探讨不同类型海山结壳的成矿差异和形成机理，为当前富钴结壳资源找矿、圈矿和资源评价提供理论指导。

In order to analyze and design the fiber optical isolator with YIG sphere, it is necessary to thoroughly research on the coupling efficiency, the optimization and the measurement for the coupling of monomode fibers with a lens as well as the theoretical analysis and experimental measurement of "Lamipol"polarizer.

本文介绍有关光纤隔离器的一些研究内容，着重探讨一种以磁光晶体球为主体的光纤隔离器，引入Lamipol高性能薄膜偏振器，使器件调节环节少，有利于器件的小型化。

Aimed at the increasing eco-environmental problems, including water shortage, water pollution, soil salinization, water loss and soil erosion, loss of function of the channel and river, biocenose degradation, etc, which severely infected the sustainable development for irrigation area, the main works in this paper are summarized as followed: constituting the measures of water resources shortages for developing agricultural water-saving technologies and adjusting agricultural structures; constructing the water polluting control and purification system of Mushroom lake: source control and decrement-sewage collection and treatment - channel ecological interception - wetland treatment -reservoir purification; putting forward the systematic projects for soil salinization and water loss and soil erosion of the integrated application of water conservancy agriculture and forestry.; constructing the ecological impervious channel model in west bank, from all of which theoretical bases and technical support for the eco-environmental rehabilitant in Manasi irrigation area were offered. All of these works were based on data collection, technical analysis, on-the-spot investigation, experimental research and technical development about Manasi irrigation area, etc.

通过对玛纳斯河灌区进行资料查阅收集、理论分析、现场勘察、试验研究和技术开发等途径，针对玛纳斯河灌区存在的水资源短缺、水体污染、土壤盐渍化、水土流失、沟渠河道功能缺失、生物群落退化等日益突出的严重影响灌区可持续发展的生态环境问题，制定了发展农业节水技术、调整农业结构的灌区水资源短缺的措施，构建了&源头控制减量-污水收集处理-引水调控-渠道生态截留-湿地生态处理-库区生态净化&的蘑菇湖水污染控制与净化系统；提出水利、农业、林业综合应用的灌区土壤盐渍化、水土流失问题的综合治理方案；构建了西岸大渠生态防渗型渠系模式，为玛纳斯河灌区生态环境修复建设提供了理论基础和技术支持。

This research work has an emphasis on the transformations of the weldments microstructure by the means of the scanning electron microscope, and the transmission electron microscope, both before and after the service of the inner cover of the austenitic stainless steels under the ultrahigh temperature. Its service behavior under the ultrahigh temperature status is also analyzed. This study provides reliable information for the industrial production and a valuable reference for further theoretical investigations.

本工作侧重于研究奥氏体耐热不锈钢内罩在高温服役前后，其接头焊缝组织中发生的转变，应用扫描电子显微技术和透射电子显微技术等手段，对焊缝显微组织进行研究，分析它在超高温条件下的服役行为，为工业生产部门提供可靠的信息，为进一步的理论研究提供一点参考价值。

Chapter five: The discovery of research, the result of theoretical analysis and the prediction of the development of the Sino-Russian eastern border in the future.

第五章：说明研究发现与理论分析的结果，并展望未来中俄东段边界的发展。

In the negative and interrogative forms, of course, this is identical to the non-emphatic forms.

。但是，在否定句或疑问句里，这种带有"do"的方法表达的效果却没有什么强调的意思。

Go down on one's knees;kneel down

屈膝跪下。。。下跪祈祷