Chapter5——EI叙词检索.pptVIP

工程索引数据库检索与利用 （Engineering Index，简称EI） Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd. Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd. Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd. 关键词取自原文中具有关键概念的词或词组，它来自于标题、文摘、全文（全记录）或标引人员给出的标引词。 叙词与关键词区别 Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd. 新概念, 缩写和全名 产品或公司名称 地名 化学制品 (无机化合物分子式, 有机化合物名称) 数字数据 非专业或技术性词或词组（俗称） 关键词包括： Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd. 词及词义的变化 拼写 首字母缩略词 术语 书写方式的不同 注：如果忽略上述变化, 漏检率就会提高。 用关键词检索常会遇到的问题 Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd. colour color defence defense atomisation atomization aluminium aluminum fibre fiber catalogue catalog sulphur sulfur modeling modelling haemodynamics hemodynamics disc disk programme program grey gray 拼写的不同 注：忽略拼写的变化就会导致漏检。 Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd. 作者名称中的缩写包括的名称多 缩写代表多个含义 PC (microcomputers or printed circuits or programmable controllers) HV (high vacuum or high voltage) FEA (finite element analysis or field emitter arrays) 缩写会检索出来意义不同的结果 注：检出非相关文献 Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd. 美国与英国 aerial vs antenna（天线） lift vs elevator（电梯) assisted vs aided (辅助） 专业表述不同 PC, desk-top computer, microcomputer, laptop（桌上电脑、微型电脑、膝上电脑） 书写方式的变化 infrared infra red infra-red IR 专业术语不同 注：造成误检或漏检 Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.