Firstly , we introduced tllc sl , ccies ol " cn ' lk accordil1g to the cn ' ls productioll , such as zigzag tubule , arl11c1lair tubulc , chiral tubule , ll1ulti - walled nanotubes ( mwnt ) , and carbo11 na11otube array . secondiy , the developllleilt of hydrogel1 storage iil cnts 11as been reviewed briefly both experin1e11tally alld tl1eoretically 一、结合碳纳米管的制备，从理论上给出了碳纳米管的几种类型，即锯齿管、扶手椅管、手性管，介绍了多壁管和纳米管阵列的结构情况，讲述了碳纳米管的应用。
It also gives the semi - ellipse closing roller forming principle & quot; semi - ellipse + bouncing = round & quot; , and makes the principle formulated and quantitative for the control method and pattern of the pipe forming bouncing . this is the reasonable model for forming of thick wall pipe and high stress pipe 指出半椭圆闭口孔型辊的成型思想是“半椭圆+回弹量=圆” ，并且使这一思想公式化、数量化，为控制成型管坯的回弹提供了方式和方法，是成型高强度厚壁管的理想模具。
With thermal spray technology , the surface of water wall tubes is easily covered by varied high performance coatings . in this paper , several new alloy and cermet coatings applied to water wall tubes were designed and their performance was studied according to the research item of hanchuan power station of hubei province " the study and development on the corrosion - resistant and wear - resistant coatings of water wall tubes in boiler " 采用热喷涂技术可以方便地在锅炉管道表面获得各种高性能的防腐耐磨涂层。本文结合湖北省汉川电厂的研究项目“锅炉水冷壁管防腐耐磨涂层的开发研究”进行水冷壁管新型合金和金属陶瓷复合涂层的设计和性能研究。
Superheater , reheater and economizer are the main component of the heat exchangers in boiler . whether they run safely and stably or not is directly count for much the safe of the whole plant operation . and the frequent tube leakage of heat surface impact upon the economy benefits and the society benefits of the power plant 水冷壁管、过热器管、再热器管、省煤器管( “四管” )是锅炉内部的主要受热面结构件，它们是否安全稳定的运行直接关系到整个电厂的安危，频繁爆漏事故影响了电厂的经济效益和社会效益。
