科技文献检索系统是科研人员常用的文献检索工具。
Science and technology document retrieval system is commonly used by researchers as document retrieval tools.
文献检索工具是科技人员研究活动的重要文献调研工具，是获取科技信息的重要来源。
Reference checking tool is an important tool for science workers and also an important source for them to obtain scientific information.
《工程索引》年刊是以条目摘要形式编辑而成的技术文献检索工具。 其内容覆盖世界范围内所有工程领域。
The Engineering Index Annual is an organized compilation of bibliographic citations and abstracts covering the world's technological literature in all engineering disciplines.
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