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Abstract: In the light of a comprehensive study and andlysis of the assortment and chemical structure of present anti-fading agents,the authors designed and choosed a group of antifadding agents suitable for color image,i.e.HALS light stabilizers which ar
中文意思:
文摘:本文在研究分析现有防褪色剂的类别和化学结构的基础上,设计了一类适合彩色影像的光稳定剂化合物,即近二十年来广泛应用于聚合物工业的受阻胺光稳定剂,并采用彩色相纸配方进行实验,结果良好。


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Abstract: In the field of optical wireless links,concentrators that are designed by the tools of nonimaging optics can be used to collect the light radiation and are more compact and have higher collection efficiencies than imaging concentrators.Hemispher 文摘:在无线光通信领域,利用非成像光学设计的集中器能够聚集光辐射能量,而且相对于成像性集中器具有更紧凑的结构和更高的增益.利用光线追迹法对半球形集中器的性质进行了分析与研究.对好几种非成像集中器:半球形集中器,复合抛物线形集中器,介质内部全反射集中器,多表面集中器,多相介质集中器,从设计原理、增益和视场进行比较,并分析其应用场合.
Abstract: In the form of interlocution, this article discusses a few theoretic questions on disaster and famine history:the relationship between the local government and the central government; the problems of replacing relief by loan in Hunan Province;th 文摘:以问答形式,探讨灾荒史研究的几个理论问题:地方政府与中央政府的关系;关于湖南改赈为贷的问题;传统社会与近代社会荒政的差异;政府和民间人士在赈灾活动中的地位。
Abstract: In the framework of density functional theory, the development of electronegativity, electronegativity equalization theory and their applications for exploring some molecular properties are overviewed. 文摘:以密度泛函理论为框架,综述电负性和电负性均衡理论的发展及其在探讨各种分子性质时的应用。
Abstract: In the future years, various kinds of factors will influence the U.S. food service industry. 摘要:在今后的几年,多种因素将影响美国的食品服务业。
Abstract: In the later 1998, the electrostatic fogremoving tower was first applied in cold rolling mill of Baogang, achieved good effect. 文摘:1998年末,静电除雾塔在上海宝山钢铁公司冷轧厂首次应用,取得了非常理想的净化效果。
Abstract: In the light of a comprehensive study and andlysis of the assortment and chemical structure of present anti-fading agents,the authors designed and choosed a group of antifadding agents suitable for color image,i.e.HALS light stabilizers which ar 文摘:本文在研究分析现有防褪色剂的类别和化学结构的基础上,设计了一类适合彩色影像的光稳定剂化合物,即近二十年来广泛应用于聚合物工业的受阻胺光稳定剂,并采用彩色相纸配方进行实验,结果良好。
Abstract: In the light of some problems such as unreasonableness of charging method, difficulty of collecting fees and waste of thermal energy existing in resent heat-supplying system, this paper probes into the concrete methods of individual household ba 文摘:针对现行供热体制,存在的热费收取不合理,收费困难,热能浪费问题,探讨了在城市集中供热系统设计中实行分个计量,分户控制的具体办法。
Abstract: In the light of the characteristics of two series sfandands issueel by ISO, the arficle analyzes that how fo applied management cycle to pvacfice of safety and environ menfal management, it especially advances a concept namde"Management cyc 文摘:根据国际标准化组织颁布的两个系列标准的特点,分析了如何运用管理循环于安全管理和环境管理实践中,提出了制约因素管理循环,并且阐述了管理职能循环、PDCA循环和制约因素管理循环运用于管理工作实践中三者的关系。
Abstract: In the light of the engineering application,the applying basis,effects and prospects of the high-density resistivity method in the limestone area have been discussed in this paper. 文摘:从工程应用的角度出发,探讨了高密度电阻率法在灰岩地区的应用基础、实际效果和应用前景。
Abstract: In the light of the problems of high power consumption and low working efficiency in a beam pumping unit, a new method for power saving of the unit is proposed, that is, adopting an optimum structure of the unit and decreasing the periodic load 文摘:针对游梁式抽油机能耗大,工作效率低的问题,提出游梁式抽油机节能的新方法,即在采用优化抽油机结构的基础上,通过改变电动机的工作特性和增加抽油机转动惯量的办法降低抽油机周期载荷系数。
Abstract: In the light of the problems of the air balance system of Model LCJ1250 chain drive pumping unit, it is proposed to change the air balance with counterweight balance, and three criteria for the modification is put forward:(1) ensuring the reliab 文摘:针对LCJ1250气平衡式链条抽油机存在气平衡故障率高和现场维修困难等问题,提出将气平衡改造成工作可靠的重力平衡的方案,并确定了改造的三个原则:一是保证整机的可靠性,使抽油机运转平稳,振动噪音小,寿命长;二是力求降低生产成本,减少零部件制造,尽可能选用原来的通用件,舍去平衡缸和空气包等气平衡附件,在原往返架主体上悬挂一个配重箱;三是力求不改变冲程、冲次及最大悬点载荷等主要技术参数。
 
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