要解决这些问题，可以删除无关的索引，添加一个新的索引，或者在某些表中周期性地清除大量过期的数据。
To solve these problems, drop the extraneous index, add a new index, or periodically clean out the large volume of obsolete data in some tables.
对索引所做的更改最初缓存在内存中，并周期性转储到索引目录。
The changes made to the index are initially buffered in the memory and periodically flushed to the index directory.
它使用一个调度程序来发起周期性的事件，比如爬网程序执行和全文索引维护。
It USES a scheduler to initiate periodic events, such as crawler executions and full-text index maintenance.
在基于RSS 的客户机中配置有一个具有搜索项的URL时，用户就可以访问被周期性索引的数据上得到的搜索结果。
When a URL with search term is configured in RSS-based clients, users can access the search results on the data that gets periodically indexed.
例如，它周期性地自动执行RUNSTATS实用程序，以更新关于表及相关索引的物理特征的统计信息。
For example, it automatically executes the RUNSTATS utility on a periodic basis to update statistics about the physical characteristics of a table and the associated indexes.
请您以月为周期，在流行的搜索引擎上查询关于您站点的信息，以确保各引擎正确地建立了您的站点的索引。
On a monthly basis, query popular search engines for their information on your site to ensure that your site is being indexed properly.
旋转索引转盘是在较短周期内进行重复操作的最理想的方法。
Rotary Index Dials can be the perfect solution for repetitive operations requiring short cycle times.
其方法被广泛应用于许多其它数据挖掘任务中，如相关性分析，周期分析，最大模式，闭合模式，查询，分类，索引等等。
It is widely applied in other data mining research such as association analysis, period's analysis, maximal and closed patterns, query, classification and index technology etc.
目前没有一个网页搜索引擎可以覆盖超过60%的互联网全部网页，而几乎每一个搜索引擎的数据更新周期都在一个月左右。
Now no a search engine can cover more than 60 per web pages on the Internet. The update interval of most system is almost one month.
目前没有一个网页搜索引擎可以覆盖超过60%的互联网上全部网页，而大部分的网页数据库更新周期都在一个月左右。
Now no web search engine can cover more than 60 percent of all the pages on Internet. The update interval of most pages database is almost one month.
将码字索引空间按照带通浊音度模式进行细致划分，全浊音模式下的基音周期得到了更多的码矢量，从而进一步提高了基音周期的量化精度。
The size of the code book for the pitch is enlarged in the all-voiced mode so that the pitch can be more exactly quantized.
将码字索引空间按照带通浊音度模式进行细致划分，全浊音模式下的基音周期得到了更多的码矢量，从而进一步提高了基音周期的量化精度。
The size of the code book for the pitch is enlarged in the all-voiced mode so that the pitch can be more exactly quantized.
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