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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 describes recent development in rolling mill technology abroad, so as to find out the deficiency and problems in future development of our iron and steel industry.

本文介绍了近年来国外轧钢技术的发展情况.找出我们的差距和今后钢铁工业发展中一些课题.

In this paper the mechanical properties of postweld state joint of 14MnMoNbB steel using the electrodes of different strength classifiable to weld are studied with the conventional test methods of Butt str- etch, Modified Tekken Type Cracking Test, Impact and Metallograph.The influential factors of undermatched joint properties are approached, best matching parameters on the comprehensive mechanical, properties such as the strength and percentage elongation of weld joint,etc.are found out as well. By using the...

In this paper the mechanical properties of postweld state joint of 14MnMoNbB steel using the electrodes of different strength classifiable to weld are studied with the conventional test methods of Butt str- etch, Modified Tekken Type Cracking Test, Impact and Metallograph.The influential factors of undermatched joint properties are approached, best matching parameters on the comprehensive mechanical, properties such as the strength and percentage elongation of weld joint,etc.are found out as well. By using the undermatched special electrode LZ60 of the recent development to weld the 14MnMoNbB steel for comprehensive mining machinery in the coal mine, the welding adaptability and the reliability of weld joint quantity are demonstrated. The experimetal results offer an exact theoretical basis for the practical production and rational technology.

本文采用对接拉伸、小铁研、冲击试验和金相观察分析等常规试验方法,对不同强度等级的焊条焊接14MnMoNbB钢焊后状态接头的力学性能进行了试验研究。探讨了低组配接头性能的影响因素,找到了接头强度、延伸率等综合机械性能最好匹配的参数,并论证了新研制的低组配专用焊条LZ60对煤矿综采机械14MnMoNbB钢的焊接适应性和接头质量的可靠性,为生产实际应用和合理工艺的制定提供了理论依据。

Tribology is an ancient yet newlyemerging frontier science. The present article describes its brief history, importance, recent development and trends in its research, and supplies information at home and abroad about the teaching plans, training courses and postgraduate curriculum arrangement .of this subject in higher learning institutions.

本文介绍摩擦学(Tribology)这门古老又新兴发展的边缘学科的概况及目前国内外在摩擦学方面研究的若干动向。文中还介绍了国内外开展摩擦学教育、培训及高等学校开设摩擦学课程,培养研究生的情况。

 
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