Cannot change the base type, length, precision , scale, nullability, or collation of an existing User-defined datatype.

Provides abstract base class for all options objects.

为所有选项对象提供抽象基类.

Base class sub-objects may have zero size.

基类子对象可以具有零大小.

Base class member names are not included.

基类成员名称不被包括.

Provides the base class for value types.

提供值类型的基类.

It is not possible to create objects of abstract base-class type.

不能创建抽象基类类型的对象.

The class adds to the behaviour provided by the base class.

这个类在其基类的基础上添加了它自己的一些行为特性.

The base class for an MDI application's document frame windows.

MDI应用的文档框架窗口的基类.

It also hides all base class Methods: With the same signature.

同时也隐藏具有相同签名的所有基类方法.

Methods in derived classes run faster than ones defined in base class.

派生类中的方法运行起来要快于在基类中界说的同样的方法.

On the other hand, you may want to override certain base-class methods.

另一方面, 您也可能想重写某些基类方法.

When the class object is constructed, the base class is remembered.

构造派生类对象时, 就记住了基类.

Provides the base class for Dynamic Data table providers.

为列关联提供程序提供基类.

You can derive both abstract and non-abstract classes from abstract base class.

您可以从抽象基类派生抽象和 非 抽象的类.

Quickly backup device drivers for your computer.

快速备份设备驱动程序为您的计算机.

The aim is to make 1,000 Base-F backward-compatible with 100 Base-T and 10 Base-T, preserving a smooth migration path.

目的是要使1000Base-F与100Base-T和 10Base-T 后向兼容,保持一条平滑过渡的道路.

Deployed commercial software requires middleware that allows for gradual upgrades of the software a backward-compatible way.

部署商业软件要求中间件可以用后向兼容的方式逐步升级.

Cannot allocate the backward-compatible document library manager object { 0 }.

无法分配向后兼容文档库管理器对象{0}.

User authentication service has become an important component of network security, especially over open network environment.

用户认证服务是确保开放式网络安全的重要组件之一.

Euripides: Do you have a name for this authentication service?

这个认证服务有名字 吗 ?

Part two is general analyses on Electronic Authentication Service.

电子认证服务概论.