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检索 Data Citation Index 叙词
使用此检索辅助工具可以选择一个或多个 Super Taxa 和/或 Taxa Notes 检索词添加到检索式中。
您可以展开各分层结构来浏览受控检索词并查看其在分层结构中的位置, 还可以检索整个叙词,查找合适的受控检索词以添加到您的检索式。
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Find Option
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Enter a word or phrase in the text box. Boolean operators (AND, OR, NOT) and
wildcards (* ? $) are permitted.
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Click the Find button to go to a list of terms that contain
the characters that you entered. For example, if you enter organ*
as the search term, the product finds every item in the index that
contains the Thesaurus Term. For example: Actinomycetes and Related Organisms.
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Click the Add button to select an item from the list. The
selected item is added to the text box at the bottom of the page.
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Click OK to transfer the selected item(s) to the Subject
Descriptors field on the Search page.
If you are performing an Advance Search, the product transfers the selected
title(s) to the field box on the Advanced Search page along with the correct
field tag. For example: DE=(Actinomycetes and Related Organisms)
Use the Previous and Next buttons to move
through the index.
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浏览 Super Taxa 和分类注释检索词
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叙词索引检索词
上义词
上义词在范围上比从叙词分层结构中选定的检索词更广。 仅提供范围更宽一级的检索词。 如果检索词有多个上义词,则将显示多个层次。
下义词
下义词通常是范围更加具体的检索词。 仅提供范围更窄一级的检索词。 如果检索词有多个上义词,则所有下义词未必都在同一层次分支中。
相关检索词
与首选检索词相关的受控检索词。
覆盖范围说明
覆盖范围说明通常描述检索词或代码的使用方法和/或提供关于其使用的历史信息。
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