The effects of temperature on column performance, retention, selectivity, and column stability are reviewed and applications of HTLC are introduced in this paper.
本文综述了高温条件下，温度对柱效、保留值、选择性、溶剂洗脱特征及色谱柱稳定性的影响，介绍了高温色谱的应用进展。
Other considerations include choosing a column that maximizes the performance of joins.
还有一种考虑是选择能最大化联结性能的列。
In this column, I'll show you the basics of adding assertions to your code, demonstrating a couple of different ways to enable and disable them for optimum code testing and performance.
在本专栏文章中，通过演示两种不同的方式来启用和禁用断言以便优化代码测试和性能，我将向您讲述一些有关向代码中添加断言的基本知识。
For increased search performance, the first column is indexed.
为了提高搜索性能，第一个列将被索引。
With its closed loop of common ETL processes and a robust BI infrastructure in place, BCBST enabled financial performance management by adding just one column to a single table.
凭借着其自身的通用ETL流程闭环和一个放置到位的健壮的BI基础架构，BCBST启用了财务性能管理，只需要向单个表格中添加一列。
In this column, I will talk about a few random topics that I have been examining that might give you a little bit better understanding of what goes on during the performance testing process.
在这个专栏中，将谈论我所研究过的一些随机主题，这些主题可能可以帮助您更好地了解在性能测试过程中所发生的情况。
If you commit less frequently, you can increase the performance advantage of an XML column over shredding.
如果降低执行的频率，就能提高xml列相当于分解的性能优势。
Also in the query rewrite vein, modifying a SELECT to get rid of a range-type predicate can increase performance by improving index key column matching.
另外，在查询重写状态下，修改SELECT来摆脱一个范围型谓词，可以通过提高索引键列匹配增强性能。
The CHAR data type provides a performance boost because the database knows exactly how big every CHAR column will be and can make certain performance optimizations when reading or writing the data.
CHAR数据类型有助于性能提高，因为数据库确切地知道每个char列有多大，所以在读写数据时就可以执行某种性能优化。
In fact, with the exception of column c, every run with biased locking turned on ended up providing approximately the same boost in performance.
事实上，除了C列以外，每次运行时如果开启偏向锁最终都会提供大致相同的性能提升。
File system caching significantly improves CLOB retrieval performance (see Figure 6) such that query Q1 can be more than twice as fast as on the XML column.
文件系统缓存大大改进了clob检检索性能(参见图6)，因此查询Q 1速度能够达到xml列的两倍以上。
In this column, I'll describe how this tool works, and I'll show you an example of how it can be used to troubleshoot a performance problem.
在本专栏中，我将介绍此工具的工作原理，将展示一个如何使用它排除性能问题的示例。
Defining the local column as DATE is convenient because it allows predicates that involve DATE literals, but does not require casting functions (which tend to impact performance).
将本地列定义为DATE类型比较方便，因为这样可以允许涉及DATE文字但是不需要覆盖函数(对性能有影响)的谓词。
The center column shows the values you would observe when analyzing the SQL Performance monitor and the last column defines the values which appear within the QVC43 column of the output monitor file.
中间的列显示在分析SQL性能监视器时观察到的值，最后一列定义输出的监视器文件中QVC43列显示的值。
NUMERIC_STRING is another column option that affects performance.
NUMERIC_STRING是另一个对性能有影响的列选项。
In this column, you've seen how AspectWerkz can be used to implement a basic execution trace enhanced with performance metrics.
在本次专栏中，介绍了如何用aspectwerkz实现带性能度量增强的基本执行跟踪。
The following untyped DataSet techniques have various combinations of convenience and performance. First, you can access the value of a column using a DataColumn instance
以下非类型化数据集技术在方便性和性能上有各种组合。
The queries are simple with good performance because you need not do any joins to access multiple subclasses, and ActiveRecord can use the type column to determine which records to return.
这些查询简单且性能很好，因为您无需进行任何连接来访问多个子类，ActiveRecord可以使用type列决定哪个记录能够返回。
While Knuth has justly warned that "premature optimization is the root of all evil," the whole point of an index is to find information fast, so this column addresses performance issues as well.
尽管Knuth曾经忠告我们：“不成熟的优化是问题的根源”，但索引的目的在于快速地找到信息，因此本专栏同时也将讨论性能问题。
It has performance issues and other quirks (like requiring you to read column values in the same order you do the select if you're using Microsoft SQL Server for your database).
因为它存在一些性能方面的问题和其他方面的一些缺点(例如，如果您使用MicrosoftSQLServer作为数据库，那么要求必须按照与选择列相同的顺序来读取列的值)。
Such customization can include adding missing function mappings, altering the data type of a nickname column, and setting some performance-related options.
这些定制可包括添加缺失的函数映射、修改昵称列的数据类型以及设置某些与性能相关的选项。
As I commented on their column, poorly handled layoffs lead to the poor morale of and performance by retained employees.
就像我给他们的专栏评论的一样，糟糕的处理裁员对方式会使余下的雇员失去士气，导致糟糕的工作状况。
Build a secondary index on a timestamp column if you want to improve the performance of incremental population.
如果您想改善增量填充的性能，则可在时间戳列上生成一个二级索引。
In an earlier column I discussed feed throat design and how it can affect extruder performance.
在早期的专栏里，我讨论过喂料口(管)设计，以及它是如何影响挤出机的性能的。
The grouping operation is about as costly performance-wise as sorting the data by the grouping column.
分组操作的performance - wise成本与依据分组列进行数据排序的成本类似。
Scholars home and abroad have taken a lot of measures against it and researches have been made abroad on the performance of FRP reinforced concrete column.
国内外学者研究了很多对策，国外还开展了关于FRP筋混凝土柱性能的研究。
For a nullable joined column, is it better performance to do a outer join, or inner join to a "null" row?
一个空连接柱，它是更好的性能做了一个外连接，或内加入一个“空”行吗？
Sets up a new whole machine model using column optimized results and re-analyses it to confirm that the dynamic optimum design of machine tool column improves the whole machine performance.
利用得到的立柱优化方案建立新的整机模型，并进行重新分析以验证立柱的动态优化设计对整机性能的提高。
Sets up a new whole machine model using column optimized results and re-analyses it to confirm that the dynamic optimum design of machine tool column improves the whole machine performance.
利用得到的立柱优化方案建立新的整机模型，并进行重新分析以验证立柱的动态优化设计对整机性能的提高。
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