Schema deletion failed: class is used as sub class.
架构更新失败：类别作为子类别使用。
Yes, if the super class implements serializable, then so do the sub classes.
是的，如果超类实现序列化，那么子类。
Here is an example of mapping a super class and a sub class using the single table strategy.
下面是一个使用单表策略映射超类和子类的示例。
If a Sub class is Serializable, it absolutely does not mean that its super class is also Serializable.
如果子类是可序列化的，它绝不意味着其超类是可序列化的。
Abstract methods used when one method can implement in more than one sub class with different implementation.
抽象方法时使用一个方法可以实现在多个接头与不同的实现类。
But if you want to prevent sub class whose superclass is serializable to be serializable it is also possible.
但是如果你想防止子类的超类是可序列化的可序列化的也可以。
When you call a method which is defined in both sub class and base class then it will invoke a method based on the object you are passing.
当你调用一个方法是定义在子类和基类，然后它会调用一个基于对象要通过法。
In your given example program1, display method is defined in both base and sub classes and you are trying to invoke it with the sub class object.
在你给的例子程序1，显示的方法是在基站和子类的定义和你试图调用它的子类对象。
Especially, science fiction is a sub-class of prose fiction, for nearly every piece of science fiction is either a short story or a novel.
特别是，科幻小说是散文小说的一个子类，因为几乎每一部科幻小说都是短篇或长篇小说。
Specially, science fiction is a sub-class of prose fiction, for nearly every piece of science fiction is either a short story or a novel.
特别是，科幻小说是散文小说的一个子类，因为几乎每一部科幻小说都是短篇小说或长篇小说。
Within the class, a procedure (function, sub, or method) definition for each operation in the Web service: these procedures must be public.
在类中，针对Web服务中的各操作的过程(函数、子元素或方法)定义：这些过程必须是公有的。
The sample Calculator code, Calculator.cs (see the download file), is a C# class with four methods (add, sub, mul, div).
样本Calculator代码 Calculator.cs （请参阅下载文件）是一个有4 个方法（add、sub、mul 和div）的 C#类。
This information is added to the sub-class definition representing that case type under the case folder.
这些信息添加在案例文件夹中代表案例类型的子类定义中。
To keep the framework simple, all additional SOA error handlers will sub-class from this base class.
要使得框架简单，所有附加的SOA错误处理都将作为继承此基类的子类。
Thus, all controls take a composite parent (or a sub-class) as an argument to the constructor.
这样，所有控件都可以采用一个复合父控件(或者一个子类)作为构造函数的参数。
To provide this type of refined control for each cell, the controls added to a GridLayout managed composite can have instances of GridData (a LayoutData sub-class).
为了给每个单元格提供这种精确控制，添加到GridLayout 的托管复合控件的控件可以拥有 GridData实例（LayoutData的子类）。
When you select a service class, Performance Expert automatically highlights the correlating sub-service class.
在选择一个服务类时，PerformanceExpert会自动地突出显示相关联的子服务类。
The Object Tables view contains two sub-views that list all classes and instances of each class in the heap.
ObjectTables视图包含两个子视图，列举了堆中的所有类和各类的实例。
The JACC provider is obliged to provide a concrete Policy sub-class, which implements the implies method.
JACC提供程序必须提供实现implies方法的具体Policy子类。
The class tag maps the order object to the ORDERS table and has a number of sub tags that describe its properties, the ID and the order name, and a one-to-many relationship to models.Item.
class标签把ORDER对象映射到ORDERS表，还有许多子标签用于描述其属性、ID订单名称，以及同models . Item的一对多关系。
CaseStartingFolder (OVP, controls location of new cases) - if set, this property controls where the new case (an instance of the CaseFolder sub-class) is filed upon creation.
CaseStartingFolder (ovp，控制新案例的位置)—如果设置了这个属性，它控制在创建时新案例(casefolder子类的实例)归档的位置。
The Ming class boats have a crew of 55, not 70, and it would be unusual for everyone on board to be killed while the sub was on the surface.
明级只有55名船员而不是70名，而且在潜艇浮出水面的情况下全部遇难也是非常离奇的事。
If there is no use of the virtual key word, those sub instances of the derived class instance are basically perfectly normal instances of a base class.
如果没有使用的virtual关键字，这些子派生类实例的实例基本上是很正常的一个基类的实例。
An interface only contains abstract methods and constants. An abstract method is one which does not have an implementation but requires that a sub-class provide it.
只有一个接口包含抽象方法和常量。一个抽象方法是一种没有实现，但需要一个子类，它提供。
The command design pattern which provides undo-redo operation, is applied to the whole class frame design and several sub-classes design of graphics edit operation.
命令模式的使用包含整个类框架设计和几套图形编辑操作子类设计，支持可以撤销重做的操作。
Today in Europe there is a new class which is growing apace that has come to be known as the underclass or sub-class.
如今在欧洲一个新阶级正在快速成长，它被称为下层阶级或亚阶级。
The whole network has not only the learning ability to neural network, but also the logic ability to fuzzy system based on rules, especially the automatic clustering ability to sub-class.
整个网络既有神经网络的学习能力，又有模糊系统的基于规则的推理能力，特别是对子类的自动聚类能力。
The shooting method, sub and super solution method, and fixed point theorem were used to study a class of nonlinear diffusion equations with nonlocal boundary value condition in perforated domains.
利用打靶法、上下解方法和不动点定理等工具，研究有孔区域上一类具非局部边值条件的非线性扩散方程。
The packet of same application class come into the same queue, and then are divided into different logical sub-queues by packet priority in the queue.
相同类型应用的数据包进入同一队列，在队列内部按分组的优先级分成不同的逻辑子队列。
So-called TV art, movie art and new media art, are only the sub-artistic class that divides because of its medium characteristic.
所谓电视艺术，电影艺术与新媒体艺术，只是因其媒介的特性而划分的字艺术门类。
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