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  recent development
Recent development of vibration utilization engineering
      
The recent development of coal combustion pollution control technologies in China, including desulphurization, denitrification, particulate matters and heavy metals emission control technologies, have been reviewed.
      
This work, starting from the early stages of the Human Genome Project up to the recent development of diagnostic and protein biochips, is considered in the context of the worldwide development of microarray technologies.
      
A brief review of the selected topics related to the recent development is presented.
      
The comprehensive analysis of the multiparameter and diverse information made it possible to reconstruct sedimentation patterns in the coastal zone of the Ekspeditsii Bay at the recent development stage of the geological environments.
      
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This paper mainly recommends the recent development of the integration of the power elements (pumps and motors) and the control elements (valves) of the marine hydraulic system .Analysing some of the typical examples of integration worked out in Japan, West-Germany, U. S.A., Franco and Norway etc, it presents a comprehensive description of the different designs leading to the integration of the hydraulic elements. Farther research is also made of the general laws governing the process of iutegration.

本文主要介绍船舶液压系统中的动力元件(泵、马达)和控制元件(阀)在集成化方面的发展近况,结合日本,西德、美国、法国和挪威等国的一些典型产品,分别就其实现元件集成化的各种具体方法加以综述,并就液压元件集成化的一般规律进行了初步的探讨.

This Paper gives an review of the advances of experimental modal analysis developed in the past 15 years, especially in the 1980's. The recent development of dynamic measurement technologies, including excitation methods and data acquisition analysis frequency response function estimation, and measurement systems are presented. Several different time-domain and frequency-domain modal identification methods of single-input/multiple-output and multiple-input/multiple-output systems are described by unified...

This Paper gives an review of the advances of experimental modal analysis developed in the past 15 years, especially in the 1980's. The recent development of dynamic measurement technologies, including excitation methods and data acquisition analysis frequency response function estimation, and measurement systems are presented. Several different time-domain and frequency-domain modal identification methods of single-input/multiple-output and multiple-input/multiple-output systems are described by unified approach. The paper emphasizes the interrelation between different aspects of the modal analysis. Some research directions are proposed at the end of the paper.

本文对试验模态分析技术的进展,特别是80年代发展起来的有关新技术进行了综合评述。主要内容有:试验激振技术、频响函数估计方法、试验测试设备、以及各种模态识别方法,包括单输入/多输出和多输入/多输出识别的时域和频域方法。文中强调了试验模态分析技术各环节之间的相互联系、相互影响,对于80年代已成为模态识别主流的多输入/多输出各种方法(包括作者发展的几种方法),用统一方法作了描述。最后提出了若干值得进一步研究的方向。

The Paper theoretically deals with the recent tendency and future prospect in Japanese cryogenic engineering in two respects. On the basis of the theoretical discusion, the recent development trends and the future prospects in Japan for the superconducting electronics field and the application of low temperature to medicine were both reported.It is refe-rentical to our national technologists.

本文从两大方面阐述日本低温工程的未来展望。在理论探讨的基础上,力求快、准、新地反映日本在超导电子学领域及低温医学应用领域的最新动向和未来展望,对国内的科研工作者及工程技术人员有较大的参考价值。

 
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