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2013-09-26T17:44:14Z

←建立内容为“{{缺乏中文说明}} This template is combines the {{tl|overset}} and {{tl|underset}} templates into one. The template names {{tl|Overunderset}} ...”的新頁面

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{{缺乏中文说明}}
This template is combines the {{tl|overset}} and {{tl|underset}} templates into one.

The template names {{tl|Overunderset}} and {{tl|Underoverset}} are synonymous and can be used interchangeably: <nowiki>{{Underoverset}}</nowiki> redirects to <nowiki>{{overunderset}}</nowiki>.

==Syntax==

The code is:

:<code><nowiki>{{underoverset|a|b|c}}</nowiki></code> or <code><nowiki>{{overunderset|a|b|c}}</nowiki></code>

where:

#the first parameter is the main symbol,
#the second parameter is the symbol above the main symbol,
#the third parameter is the symbol underneath the main symbol.

==Application==

===Combined overset and underset===

The effect of an can be achieved by combining underset followed by overset:

:1234567890 + {{underset|a|{{overset|a|b}}}} + 1234567890 + {{overset|a|{{underset|a|b}}}} + 1234567890

but sometimes one combination will not work, particularly when there is only one combined application of templates on a line:

:1234567890 + {{underset|a|{{overset|a|b}}}},

:1234567890 + {{overset|a|{{underset|a|b}}.

The overunderset is one way around the problem using by containing the over- and under- positions for symbols:

:1234567890 + {{overunderset|a|b|c}} + 1234567890 + {{overunderset|a|b|c}}}} + 1234567890

:1234567890 + {{overunderset|a|b|c}},

:1234567890 + {{overunderset|a|b|c}}.

===Reduction to overset===

With the third parameter empty:

:1234567890 + {{overunderset|a|b|}} + 1234567890 + {{overunderset|a|b|}} + 1234567890

:1234567890 + {{overunderset|a|b|}},

:1234567890 + {{overunderset|a|b|}}.

===Reduction to underset===

With the second parameter empty:

:1234567890 + {{overunderset|a||b}} + 1234567890 + {{overunderset|a||b}} + 1234567890

:1234567890 + {{overunderset|a||b}},

:1234567890 + {{overunderset|a||b}}.

==See also==

*[[Wikipedia:«math»]]
*[[:Template:Su]] for superscripts and subscripts adjacent to a symbol, rather than above and below it.

<includeonly>
[[Category:数学格式模板]]
</includeonly>

Template:Overunderset/doc - 版本历史

imported>Great Brightstar：​←建立内容为“{{缺乏中文说明}} This template is combines the {{tl|overset}} and {{tl|underset}} templates into one. The template names {{tl|Overunderset}} ...”的新頁面

imported>Great Brightstar：←建立内容为“{{缺乏中文说明}} This template is combines the {{tl|overset}} and {{tl|underset}} templates into one. The template names {{tl|Overunderset}} ...”的新頁面