在每篇ei摘要的开头，是工程索引年刊的文摘号。
The Engineering Index Annual abstract number is found at the beginning of each abstract.
《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.
《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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