无论您正在创建一个BPEL过程，还是一个业务状态机，或者是几种其他类型组件中的任意一种，您都需要定义自定义表达式和行为。
Whether you are creating a BPEL process, a business state machine, or any of several other types of components, you need to define custom expressions and behavior.
还可以在键入过程中显示的列表中选择表达式的每个部分。
You can also select each part of the expression from the lists that display as you type.
如果表达式再不包含任何其它的括号，求值(过程)完成。
If the expression doesn't contain any more parentheses, the process of evaluation is finished.
从编译器的角度来说，括号括起来的表达式也是一个项，在计算过程中需要被当做一个整体单元来处理。
From the compiler's point of view, the expression in parentheses becomes a term, which must be handled as a unit before computation can proceed.
求值过程类似于手工计算：如果表达式中包含括号，先求嵌套最深的括号对中的子表达式的值。
The process of evaluation is similar to calculating by hand: while the expression contains parentheses, the subexpression inside the deepest nested pair of parentheses is evaluated.
在从数据库读取XML文档并传递给应用程序的过程中，可以在查询中使用转换表达式修改XML文档。
A transform expression can be used in a query to modify an XML document as it is read from the database and passed to the application.
步骤3：如果表达式中不包含其它括号，求值的过程就完成。
Step 3: If the expression doesn't contain any more parentheses, the process of evaluation is finished.
当一个程序运行时，完成表达式中指定操作的过程被称为赋值。
When a program is run, the process of carrying out each of the specified operations in an expression is called evaluation.
然而，此过程也再次说明执行同一任务有多种方法，而且有时正则表达式并非总是最佳选择。
Again, however, this procedure also demonstrates that there are multiple ways to do the same task, and sometimes regular expressions aren't always the best option.
简单的非递归过程表达式并不能访问所有的元素，尽管许多库都包含有帮助功能，可以用于遍历树。
No simple non-recursive procedural expression accesses all elements, although many libraries include helper functions for walking the tree.
转换过程包括用下面的算法读入中缀表达式的操作数、操作符和括号。
The conversion process involves reading the operands, operators, and parentheses of the infix expression using the following algorithm.
为了避免重复这一过程，XPath提供了一个compile方法，只有一个参数，即字符串XPath表达式。
To avoid duplicating that process, XPath provides a method called compile , which simply takes your string XPath expression as its only argument.
实际上，正则表达式可在SQLServer的早期版本中使用，但是过程的效率很低。
Regular expressions could actually be used in earlier versions of SQL Server, but the process was inefficient.
实际的处理过程就是将Scheme语法转换为可以操作的列表，对列表进行操作，然后将它转换回输出的Scheme语法表达式。
In effect, you are converting the Scheme syntax to a list you can manipulate, manipulating that list, and then converting it back into a Scheme syntax expression for output.
替换过程使用replace函数和正则表达式完成。
That's accomplished through the use of the replace function along with a regular expression.
比如，可使用清单14中的代码来实现和清单13类似的效果，这一次在迭代全部CD的过程中使用了xpath布尔表达式。
For instance, you could use the code in Listing 14 to achieve an effect similar to that shown in Listing 13; this time, all CDs are iterated over, and a Boolean XPath expression is applied.
在类D的编译过程中还是在包含不相干表达式new D().nest(1000) 的客户机类的编译过程中呢？
In the compilation of class D or in the compilation of a client class that included the meddlesome expression new D().nest(1000)?
这个XPath表达式与存储过程中的其他SQL相结合，返回在输入的日期应该支付的总金额。
This XPath expression is used with other SQL in the stored procedure to return the sum of the payable amount due on the date supplied as input.
序列（Sequence）表达式引起了枚举器的‘let’和‘use’的销毁过程过早地发生；
Sequence expressions involving 'let' and 'use' dispose of enumerator too eagerly
仍然可以在表达式中使用该函数，确定在处理样式表元素的过程中处理程序是否支持某种内置的或扩展的函数。
You can still use this function in an expression to determine if a particular built-in or extension function is supported as the stylesheet element is being processed.
包括所有表、存储过程、函数和视图，并能基于正则表达式来排除特定对象。
Includes all tables, stored procedures, functions, and views with the ability to exclude objects based on regex patterns.
在本教程中，您将收到超过4小时的内容，它描述了我的头发生成过程中没有使用脚本或表达式。
In this tutorial you will receive over 4 hours of content which describes my process of generating hair without the use of scripts or expressions.
如果您必须在正则表达式处理过程中处理Unicode,Wilson提供了一些值得看的技巧。
If you have to handle Unicode in your regular expression processing, Wilson supplies a few tricks worth looking at.
MatchIterator类是可枚举的，它还处理正则表达式处理过程。
The MatchIterator class is enumerable and handles the regular expression processing.
推导出了开关过程的具体解析表达式。
Concrete analytical expressions of the switching process have been derived.
Clojure是一种Lisp变体，因此计算过程首先将一个表达式读取为Clojure数据结构(通常是一个列表)，随后计算数据结构中的各表达式。
Clojure is a Lisp variant, so evaluation occurs by first reading an expression as a Clojure data structure (usually a list), then evaluating each expression in the data structure.
就像内能u一样，我们希望能够利用状态方程的数据，计算出其表达式，这些表达式能方便我们说出即将发生的过程。
Just like u, we'd like to be able to express it in a way that allows us to calculate what happens only from equation of state data.
运行时api，诸如dom，正在倾向于允许程序员编写XPath表达式而不是编写明确的树遍历代码(后者是一个痛苦的过程)。
Runtime APIs, such as DOM, are moving towards allowing programmers to write XPath expressions rather than writing explicit tree traversal code (which can be painful).
这些语句也规定程序员可以选择的变量与参数种类，以及当一个表达式使用过程或函数时代码将返回的值的类型。
These statements also define the kinds of variables and parameters the programmer can choose and the type of value that the code will return when an expression accesses the procedure or function.
分析了自由电子激光器中电子与波的相互作用过程，导出了相应的增益表达式。
The interaction process between electrons with electromagnetic waves in the fr-ee electron laser (FEL) is analysed and the corresponding gain expression is derived.
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