确定此派生元素所基于的类型定义。
Determines the type definition that this derived element is based upon.
规则允许一些明显无效的派生元素（也就是说，限制类型允许比基础类型更多的元素）。
The rule allow some obviously invalid derivations (that is, restriction allows more than base).
公开此方法以便派生元素类可以对其自身可能的无效布局状态进行进一步的检查。
It is exposed so that derived element classes can make further checks on their own possibly invalid layout state.
而且它还提供注册中心功能，通过用户定义的属性、关系和分类器来扩展已注册的服务声明和派生内容模型元素。
And it provides registry functions for decorating registered service declarations and elements of the derived content models with user-defined properties, relationships, and classifiers.
当目标表引用是一个派生表时，那么必须使用ACCESS元素。
The ACCESS element must be used when the target table reference is a derived table.
很多情况下，类中包含一个核心数据元素，通过它可以派生或找到类中的其他字段。
From time to time, a class contains a core element of data from which the rest of the class's fields can be derived or retrieved.
元素派生—呈现为包含关系。
通过一系列派生形成的元素分类越来越具体，可能约束越来越多，总是严格地与一致的处理和呈现模型联系在一起。
Classification of elements through a sequence of derivations that are progressively more specific, possibly more constrained, and always rigidly tied to a consistent processing or rendering model.
即，您可以从已有的短语和块元素派生出新短语和块元素。
That is, you can derive new phrase or block elements from the existing phrase and block elements.
因此，在从该模式派生XML结构时，提及为其派生 XML 结构的相关根元素很重要。
Therefore, when deriving an XML structure from the schema, it is important to mention the relevant root element for which want to derive the XML structure.
语义精确：可以从现有元素派生出具有更具体语义的内容元素，并可以在文档内自由使用这些内容元素。
Semantic precision: Content elements with more specific semantics can be derived from existing elements and used freely within documents.
所有类均由QName(请参阅清单6)派生而来，QName将XML元素名称表示成名称空间uri和本地名的组合。
I derived all the classes from QName (see Listing 6), which represents the name of an XML element as the combination of the namespace URI and the local name.
要在实例文档中对元素指定xsi：type，使用派生类型替换声明的类型。
Xsi: type is specified on an element in the instance document to replace the declared type with a derived one.
这还能自动创建从Capability链接回所选activity元素的派生链接。
It will also automatically create derivation links from the Capability back to the Activity elements we chose.
此faultInfo的类型派生自错误的wrapper元素引用的模式，在本例中为 Fault。
The type of this faultInfo is derived from the schema, which the fault's wrapper element refers to; in this case it's Fault.
替换：将每个元素替换为由它派生的另一个元素，创建新的并行数组。
Replacement: Creating a new parallel array by replacing each element with another derived from it.
为了保持这些新定义与原始定义的一致性，通常会给它们分配与其派生源元素类似的名称。
To help preserve the origin of these new definitions, it is often useful to assign them names similar to the source elements from which they are derived.
下面规则中的选择符结合了派生选择符和属性选择符，它匹配任何元素，如果(1)该元素设置了"href"属性；且(2)包含在一个P元素内，而P元素又包含在一个DIV元素内
The selector in the following rule, which combines descendant and attribute selectors, matches any element that (1) has the "href" attribute set and (2) is inside a P that is itself inside a DIV
比如，element (ship -addr,loc：USPostalAddress)将选择名称为ship - addr、类型为有效loc： USPostalAddress(无论是直接类型还是派生自父元素)的节点。
For example, element (ship-addr, loc: USPostalAddress) will select nodes named ship-addr whose type is a valid loc: USPostalAddress, either directly or by derivation.
最后，定义模块设置了类属性，以声明新元素是从topicref派生的，并由howto包提供。
Finally, the definition module sets the class attribute to declare that the new elements derive from topicref and are provided by the howto package.
在用抽象对象作为惟一元素构造出稳定的系统组织结构和应用框架后，从抽象对象派生出实例对象以实现框架和实例对象的分离。
System issues and application frameworks were constructed with abstract objects, and the instance objects were derived from the abstract objects to separate the frameworks with the instance objects.
如果用派生类中的多个元素隐藏同一个基类元素，隐藏元素将变为该元素的重载版本。
If you shadow the same base class element with more than one element in your derived class, the shadowing elements become overloaded versions of that element.
获取在派生的类中重写时用于标识配置文件中此元素集合的名称。
Gets the name used to identify this collection of elements in the configuration file when overridden in a derived class.
这样派生类将不必重新定义这些公共元素。
This saves the derived classes from having to redefine the common elements.
分部类必须派生自支持根元素的类型。
The partial class must derive from the type that backs the root element.
此方法的默认实现需要由派生类重写，以便在移除指定元素之后执行某些操作。
The default implementation of this method is intended to be overridden by a derived class to perform some action after the specified element is removed.
在这种情况下，您希望可从基类和从所有派生类均可访问该元素。
In such a case, you want the element to be accessible both from the base class and from all derived classes.
当您定义从基类继承的类时，有时会需要重定义派生类中的一个或多个基类元素。
When you define a class that inherits from a base class, you sometimes want to redefine one or more of the base class elements in the derived class.
从另一个程序集的访问权限必须发生在从受保护的内部元素声明的类派生的类声明，它必须采取通过派生的类类型的实例。
The type or member can be accessed by any code in the assembly in which it is declared, or from within a derived class in another assembly.
指定一个或多个已声明的编程元素只能从其自身的类或派生类访问。
Specifies that one or more declared programming elements are accessible only from within their own class or from a derived class.
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