在该表的每一行中，都有一个路径位置表达式和一个相关的指定列。
In this table for each row, there is both a path location expression and an associated named column.
在items中，路径位置表达式使用星号作为通配符nametest匹配所有子元素below- item。
Within items, the path location expression then USES an asterisk to perform a wildcard NameTest to match on all child elements below - items.
要完成整个路径位置表达式的求值，所有元素都必须步进，并匹配第一次出现的子元素named-USPrice。
To complete the evaluation of the entire path location expression, each of these elements will be stepped into and the first occurrence of an expected child element named - USPrice matched on.
首先，我们要创建一个从文本文档中提取面积和位置概念的正则表达式规则文件。
First, we will create a regular expression rule file to extract the concepts of area and location from text documents.
因为计算过的表达式可能很长，并且可能包含对于XML标记来说非法的字符，所以计算过的列仅由它们的位置命名。
Since a calculated expression can be long, and contain characters illegal for XML tags, calculated columns are named simply by their position.
更聪明的方法是编写更具体的表达式，显式指定查找节点的位置。
It is wise to write more specific expressions that explicitly specify where to look for nodes.
正则表达式可以过滤特定的位置，例如行的开始或结束，以及单词的开始和结束。
A regular expression can filter for a specific location, such as the start or end of a line and the beginning and end of a word.
对于更好的错误消息来说，我们需要知道表达式的位置。
For a better error message, you need the expression's location.
创建规则文件和匹配位置和面积的正则表达式。
Creating a rule file with regular expressions for location and area.
它使用XPath表达式将输入表字段映射到输出文档中的某些位置。
It USES XPath expressions to map input table fields to certain positions in the output documents.
要完成这个任务，要用包含XPath表达式的TXT文件来标记要被替代的XML配置的位置。
To do this task, TXT files containing XPath expressions are used to mark the positions of XML configurations to be replaced.
您还可以使用XPath中的条件表达式来进一步精确定位特定节点的位置。
You can use conditional expressions in XPath to further pinpoint the location of specific nodes.
最有特点的XPath表达式(XPath从中获取其名称)是位置路径。
The most characteristic kind of XPath expression (the one from which XPath gets its name) is the location path.
多数XPath表达式，特别是位置路径，都返回节点集。
Most XPath expressions, especially location paths, return node-sets.
详细的表达式检查能够确定错误确切的类型和位置。
A detailed expression check can determine the precise type and location of an error. There are seven categories of error checking
使用宏 YYLLOC_DEFAULT（请参看Bison文档 中默认的定义），Bison可以计算出某个表达式的位置。
Together with the macro YYLLOC_DEFAULT (see the Bison documentation for the default definition), Bison calculates the location of an expression.
只要知道文档有什么元素以及在什么位置，$rss->channel->item->title这样的表达式很方便。
Expressions such as $rss->channel->item->title are great as long as you know exactly which elements are in the document and exactly where they are.
只需要用字符串创建一个新的表达式(要记住，这些都只是在XML文档中定位的引用，常常被称为位置路径)。
You can simply create a new expression (remember that these are just references, often called location paths, to locations within the XML document) as a string.
这些表达式可以是合并域数据、书签书签：以引用为目的在文件中命名的位置或文本选定范围。
These expressions can be merge field data, bookmark bookmark: a location or selection of text in a file that you name for reference purposes.
没有为新断点指定位置。请提供一个函数名、文件位置、数据表达式或地址。
No location specified for new breakpoint. Supply a function name, file location, data expression, or address.
如果在字符串的当前位置上发现一个完全匹配，那么正则表达式宣布成功。
If a complete match is found at the current position in the string, the regex declares success.
当一个特定字元匹配失败时，正则表达式将试图回溯到扫描之前的位置上，然后进入正则表达式其他可能的路径上。
When a particular token fails to match, the regex tries to backtrack to a prior point in the match attempt and follow other possible paths through the regex.
当一个正则表达式投入使用时，首先要确定目标字符串中开始搜索的位置。
When a regex is put to use, the first step is to determine the position within the target string where the search should start.
前向否定界定符。与肯定界定符相反；当所含表达式不能在字符串当前位置匹配时成功。
Negative lookahead assertion. This is the opposite of the positive assertion; it succeeds if the contained expression doesn't match at the current position in the string.
返回这样的维度，该维度在多维数据集中的以零为基的位置是由数值表达式指定的。
Returns the dimension whose zero-based position within the cube is specified by a numeric expression.
建立了一种混联型虚拟轴机床主进给机构位置分析的输入输出方程，并推导出奇异位形判别的解析表达式。
An analytical expression for determining singularity configuration which is a polynomial equation is set, and the numeric symbolic manipulating technique is introduced in the paper.
该算法通过计算表达式在指向图中的左值，得到所有可能被修改的内存位置，从而计算出所有可能在被调用过程中被修改的表达式。
Through computing the lvalue of an expression in the points-to graph, we get all the modified memory locations. Thus we can get all the expressions that may be modified in the called procedure.
该算法通过计算表达式在指向图中的左值，得到所有可能被修改的内存位置，从而计算出所有可能在被调用过程中被修改的表达式。
Through computing the lvalue of an expression in the points-to graph, we get all the modified memory locations. Thus we can get all the expressions that may be modified in the called procedure.
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