This standard is drafted in accordance with rules in GB/T 1. 1-2009.This standard supersedes TB/T 3080-2003 Technical Speci fications for Concrete Turnout Sleepers with the following revisions：-Requirements for the performance of concrete and related raw materials have been revised （refer to section 3. 2 herein and section 3. 1 in edition 2003）.-Requirements for the performance of stirrups have been revised （refer to section 3. 2. 7 herein and section 3. 1. 8 in edition 2003）.-Requirements for concrete curing have been revised （refer to section 3. 3. 3 herein and section 3. 3. 6 in edition 2003）.-The load values of static load crack resistance strength and fatigue strength of turnout sleepers have been revised， and the specific values are shown in the design drawing （refer to section 3. 4. 7 herein and section 3. 4. 2 and section 3. 4. 3 in edition 2003）.-Technical requirements for the durability of concrete have been added （refer to section3. 4. 3， section 3. 4. 4 and section 3. 4. 5 herein）.-Technical requirements for the dimensional deviation and appearance quality of turnout sleepers have been revised and stipulated respectively according to train speed （refer tosection 3. 4. 1 herein and section 3. 4. 4 in edition 2003）.-The requirements for the time interval of approval test have been revised （refer to section5. 2. 1 herein and section 5. 3. 2. 3 in edition 2003）.-The measuring method for the camber of turnout sleepers has been added （refer to section 4. 11）.This standard is proposed and managed by Economic and Planning Research Institute， the Ministry of Railways.This standard is drafted by Railway Engineering Research Institute of China Academy of Railway Sciences， China Railway Engineering Consulting Group Co.， Ltd. and China Railway Fangshan Bridge Co.， Ltd. Beijing.This standard is mainly drafted by Fan Jia， You Ruilin， Du Xianggang， Hou Wenying， Pei Aihua， Zhou Zhaochun and Cao Fengjie.The previous edition of the standard superseded by this standard is TB/T 3080-2003.

本词典收词近50000条，既收录英语核心词汇，又扩充常用派生词和短语，能满足大、中学生及教师和其他英语学习者的查询需求。针对在学习、使用英语中的实际困难，词典中专门设有用法说明栏、同义词辨析栏，大大强化学习功能。本词典还特别重视语词语法信息，在正文行间对单词的语法特征附加诸多提示；标明了词条的词类、词源、修辞色彩等额外语用信息，帮助读者得体地遣词造句。另外，词典中提供丰富例证表明词汇在语言环境中的用法，进一步扩充词目信息。

本词典共收录英语单词、短语和扩展词近50000条。这些词条主要选自高等学校英语专业基础阶段教学大纲、现行全日制高级中学英语教学大纲和比较权威的英汉词典等。 本词典具有英汉双解的功能，不仅可以让使用者正确地理解每个单词和短语的含义，同时又能让使用者准确恰当地运用它们。本词典博采众长，融英语解释、汉语释义、例证、短语、派生词等为一体，设计新颖，例句丰富，实用性强，使用方便，是适合我国中学生、大学生及英语自学者使用的工具书，同时也可作为英语教师的教学参考书。

本词典是一部内容丰富的英汉汉英双向词典。适合大、中学生及具有中级或中级以上英语水平的各类读者使用，既可以用作查阅的工具，也可以作为翻译或写作的帮手。本词典的英汉部分收词10000余条，连同扩展词汇实际共收词近20000条，基本上涵盖了我国教育部颁布的《初中英语新课程标准》词汇表、《高中英语新课程标准》词汇表和《大学英语教学大纲》词汇表中所列词汇。本词典还针对英语学习和英语教学的实际需要，将一些英语知识进行了归纳和提炼，词典中共设有用法说明和辨析千余条，有助于读者从多层次、多角度学习、掌握和运用英语词语。 本词典的汉英部分收词30000余条。除一般词和大量新词外，还收入一些常见的方言、成语、谚语及自然科学的常用词语。汉语词语的选择注重科学性和规范性，英语释义地道准确，原汁原味，简明易懂。所收的汉语词语涵盖面广，在日常学习、生活与社交活动中使用频率高，搭配能力强，可供读者口头交际和书面表达时使用。随着时代的发展，英语语言中不断有涌现出反映时代面貌的新词语或新义项。因此在本词典编纂过程中，编纂人员选收了近千条在报刊、影视、网络等媒体上使用频率较高的新词语，使本词典具有鲜明的时代特色。

本书分为英汉英英汉英三个部分，收录中学生常用词汇和部分谚语、成语等，对英语学习者和翻译工作者都有极大帮助。其中英汉部分收词15000余条，提供音标、词性、释义、例句、搭配、用法、辨析等内容。汉英部分收词近25000条，除一般词外，还收入了一些方言、成语和谚语等。英英部分收录了中学生常用词汇，配以英语释义，实用性强。

暂缺简介...

为满足电力系统工程技术人员和科技管理人员的需求，我社收集整理了此套汇编。按专业分类编排，预计分为基础与安全卷、电力线路卷、电力变压器卷、继电保护与自动控制卷、低压装置卷、高压输变电卷、特高压技术卷、断路器卷、电力金具与绝缘子卷、带电作业卷、设备用油卷、节能管理卷、互感器与电抗器卷等13卷。本卷为电力线路卷，共收入国家标准57项。

，所有词汇均按照英文字母顺序排列，对所有收录的词条进行了梳理、规范和审定。本词典可供建筑智能化等相关领域从事研究、开发和应用的人员、信息技术书刊编辑和文献译摘人员使用，也适合相关专业的大专院校师生参考。

《现代英语语法》（典藏版）是一部内蕴丰实、阐释透彻的现代英语语法宝典，适合大中学校师生、英语翻译及研究人员使用。该书以系统、详尽、实用为显著特点，旨在以实际应用为目的，系统、全面地介绍英语的词法、句法、构词法以及语音规则。结构清晰，条理分明，归纳出多种句型及习惯用法，使纷繁复杂的语法知识一目了然；所选例句详实新颖，知识性和趣味性强；所设“典型错误解析”板块，通过误、正句式比对分析，使读者认识到英语学习过程中容易犯的错误，有助于提高读者正确运用英语语言的能力。

To promote the exchange and cooperation in railway technology between China and the rest of the world， Planning and Standard Research Institute of National Railway Administration， entrusted by National Railway Administration of the People's Republic of China， organized the translation and preparation of Chinese railway technology and product standards.This standard is the official English version of Spherical Bearings for Railway Bridges （TB/T 3320-2013）. The original Chinese version of this standard was issued by the former Ministry of Railways of the People's Republic of China and came into effect on May 20， 2013. In case of discrepancies between the two versions 9 the Chinese version shall prevail. National Railway Administration of the People's Republic of China owns the copyright of this English version.Your comments are invited for next revision of this standard and should be addressed to Technology and Legislation Department of National Railway Administration and Planning and Standard Research Institute of National Railway Administration.Address： Technology and Legislation Department of National Railway Administration， No. 6， Fuxing Road， Beijing， 100891， P. R. China.Planning and Standard Research Institute of National Railway Administration， B block， JianGong Building， No. 1， Guanglian Road， Xicheng District， Beijing， 100055， P. R. China.The translation was performed by Zou Yunfeng and He Xuhui.The translation was reviewed by Peng Wei， Yan Bin， Zhou Mi， Guo Hui， Wen Yongkui， Zang Xiaoqiu， Wang Yingjie， Wang Hanfeng， Jing Haiquan， Chen Qi， Xiao Fei and Zhao Lin.