There are at least two classes of these receptors, which have been designated A1 and A2.
这些受体至少有两类，分别被命名为A1和A2。
Aeroliths are further subdivided into two classes: chondrites and achondrites.
陨石进一步细分为两类：球粒状陨石和无球粒陨石。
Save and compile the two classes before continuing.
进行下一步之前，保存和编译两个类。
There are really two classes of methods represented.
实际上有两类方法。
For these reasons educated men then fell mainly into two classes.
因为这些缘故，受过教育的人就主要分成两类。
Here's an example involving polymorphic recursion across two classes.
下面的示例涉及两个类之间的多态递归。
The bulk of the work in your GWT procedure call happens in two classes.
GWT过程调用中的大部分工作都是在两个类中进行的。
The latter two classes represent business domain-driven example classes.
后两个类代表了业务域驱动示例类。
The relation between the two classes is also represented in this diagram.
图中表示了这两种类间的关系。
This is a relatively simple construct consisting of one interface and two classes.
这是一个相对简单的结构，只包含一个界面和两个类。
How do I represent a one-to-many, or many-to-many, relationship between two classes?
怎样表示两个类之间一对多或多对多的关系？
Let us consider a scenario in which there are two classes of traffic, gold and bronze.
我们来考虑一个场景，其中有两类请求流，gold和bronze。
Next time, I'll show how to add the relations between the two classes to finish the example.
下一次，我将展示如何在两个类之间添加关系，从而完成这个示例。
What you’ve done here is to define a simple one-to-one relationship between objects of the two classes.
这里所做的是在这两个类的对象之间定义简单的一对一关系。
It consists of two classes, one for a person's primary data ("person") and one for his or her "address".
它包括两个类，一个代表person的基本数据（“person”），另一个代表 person 的“address（地址）”。
The networking functions are implemented in a library and present two classes for application development.
网络功能是在一个库中实现的，并且包含两个用于应用程序开发的类。
Listing 1 illustrates these principles with the definition of two classes: KerberosTGT and KerberosSecretKey.
清单1用两个类：KerberosTGT和KerberosSecretKey的定义说明了这些原则。
In effect you have two classes of developers, those who simply wire together controls and those who define them.
实际上，你会拥有两类开发人员，一些把这些控件简单组合在一起，一些来定义这些控件。
Now that you have declared your two classes, you just need to tell the JPA runtime how to connect to your database.
既然已经声明两个类，只要告诉JPA运行时如何连接数据库。
The unique names allow you to avoid naming collisions, which occur when two classes or functions of the same name exist.
惟一的名称避免了命名冲突，当两个类或函数使用相同的名称时就会发生这种情况。
You probably already know that there are two classes of interfaces for parsers: object-based and event-based interfaces.
您可能已经知道语法分析器有两类接口 - 基于对象的和基于事件的接口。
This principle states that if we have 2 reasons to change for a class, we have to split the functionality in two classes.
这个原则指出，如果有两个原因去修改一个类，我们必须拆分它的功能到两个类中。
Here you will find two classes, namely Customer and Account, which are mapped to two tables using Hibernate mapping files.
在这里会发现两个类，即Customer和Account，它们用Hibernate映射文件映射到两个表。
The difference in behaviour between the put attribute and the cluster workload rank attribute provide two classes of service.
放置属性和集群工作负载等级属性在行为上的区别提供了两类服务。
In this case, creating Pegasus as a subclass of Horse makes sense because it expresses a relationship between the two classes.
在本例中，创建Pegasus作为Horse的子类很有意义，因为它表示了这两个类之间的关系。
So, for example, a protocol test spreadsheet will have these two classes customized for the structure of that specific protocol.
例如，一个协议测试电子表格将拥有两个已针对特定的协议进行定制的类。
This is primarily to avoid name clashes: If two classes have the same attribute and are mapped to global names, they may conflict.
这样做主要是为了避免名称冲突：如果两个类具有相同的属性，映射为全局名可能会造成冲突。
Any time you think that you have a simple m: m relationship between two classes, a third class is probably waiting to be discovered.
任何时候您认为两个类之间存在着简单的m： m关系时，可能还需要从中发现第三个类。
Any time you think that you have a simple m: m relationship between two classes, a third class is probably waiting to be discovered.
任何时候您认为两个类之间存在着简单的m： m关系时，可能还需要从中发现第三个类。
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