Although he did not know it at the time, this was the first in a class of objects, now known as planetary nebulae, to make it into the catalog.
尽管他当时并不知道，这是首个被记录在册的行星状星云。
This method is essential for the stability of a class of objects outside the loop transfer function matrix, in the decoupling both before and after decoupling is an essentially stable object.
提出了针对一类开环传递函数矩阵对象为本质稳定及解耦后仍是本质稳定时系统的冗余设计方法。
You use class diagrams to describe the types of objects in a system and their relationships.
使用类图来描述一个系统中对象类型以及它们之间的关系。
A health indicator measures the health of some particular class of database objects.
健康指示器可以测定某些特定数据库对象类的状态。
This class is not shown here, but maintains the registration information and records usage information for the type and maintains a queue of pooled objects.
这里没有显示该类，但是该类负责维护注册信息并记录类型的使用信息，而且维护所汇聚对象的队列。
The same overloaded operator allows you to construct objects of class A, B, and C in shared memory.
同一个重载的操作符让您可以在共享内存中构造类A、B和C 的对象。
Internally, the class maintains a hash table of all pooled objects.
在内部，类负责维护所汇聚的全部对象的哈希表。
Test developers created generic methods to get all objects of a particular class or to get just one object at a given index under a specific parent object.
测试开发人员创建一个通用的方法来获取一个特定类的所有对象，或者获取一个具体父对象下给定索引号的一个对象。
These backup objects are bound to a specific management class and are stored according to the attributes of the underlying backup copy group (see Archive and backup copy groups).
这些备份对象被绑定到特定管理类，而这些对象的存储则是根据基础备份副本组(请参阅归档和备份副本组)的属性进行的。
A dynamic APIs scenario does not require the generation of a typed interface, factory class, or implementation class for the objects in your data model.
动态api场景并不要求为数据模型中的对象生成类型接口、工厂类或实现类。
A static attribute is of interest to an object modeler only if it can be used to distinguish one class of objects from another.
对象建模者关心静态属性仅当它可以用来区分一类对象与另一类对象。
We would like causes, nonprofits, gifts, members, drives, registries, and many other types of objects to inherit from a common base class so we could treat all types of content in the same way.
我们很希望cause、nonprofit、gift、member、drive、registry以及其他一些类型的对象都能够从通用的基类中继承，以便我们能以同样的方式处理所有类型的内容。
This class represents a collection of different types of permission objects organized by PermissionCollection.
这个类代表由PermissionCollection组织的不同类型许可权对象的一个集合。
A central component of Rails is the class ActiveRecord, which maps relational tables to Ruby objects and thereby to the data manipulated by controllers and shown in views.
activerecord类是Rails的一个核心组成部分，它将关系型表映射为Ruby对象，使其成为控制器可以操作并能在视图中显示的数据。
The factory class maintains a pool of HttpApplication objects and uses them to service requests for the application.
该工厂类维护一个用于服务应用程序请求的HttpApplication对象池。
For now, it will suffice to say that a case class allows for very terse construction of simple objects with some pre-defined methods.
现在，我们只需要知道，一个case类允许精炼的简单对象的构造，以及一些预定义的方法。
The first thing I've done inside the run method is to create two instances of the Alternative class, each with a different array of Guards objects.
在run方法中，要做的第一件事是创建alternative类的两个实例，每个都有一组不同的Guard对象。
With this simple database created, you'll see (in Listing 5) a class that returns a list of PhoneBookEntry objects.
创建这个简单的数据库后，将看到(在清单5中)一个返回PhoneBookEntry对象列表的类。
Even though the Dictionary class is currently little more than a wrapper around an associative array, there is some clue to the power of objects here.
尽管Dictionary类当前与关联数组的包装器相差无几，但这里有一些了解对象功能的线索。
Imagine how long it would take if you had a large set of domain objects and you implicitly selected from the top object class.
假设如果你有一大堆领域对象，你从最上层的Object类进行隐式选择查询，那该需要多长时间啊！
Because closures are objects of type closure, they can also be a property of a class or a member of a collection.
因为闭包是Closure类型的对象，所以它们也可以作为类的属性或集合的成员。
Based on the tuning of business rules and design in Section 4.1 you come up with a class diagram for your domain objects represented by the POJO. Our recommendations are.
基于4.1节中对业务规则和设计的调优，你得到了一个用POJO来表示的领域对象的类图。
Mock objects can also be used to spy on the behavior of a class.
mock对象还可以测试类的行为。
An Edge is a line segment, and you add Edge objects to a design through the add_line method of the Entities class.
Edge是一条线段，可以通过entities类的add_line方法将Edge对象添加到设计中。
As the names of these classes suggest, the row class holds objects for a single row, and a cell class, shown in the code below (Listing 3), is for a content of a cell in a row.
如这些类的名称所示，Ro w类存储每个行的对象，而cell类用于储存每个行的单元格的内容，见下面的清单3。
You can have a SingletonFactory class with a globally accessible map of class names or class objects to singleton instances.
创建一个SingletonFactory类去全局映射类名(或者是类对象)和单实例对象。
BookServiceImpl is a singleton class that USES an in-memory map to maintain the collection of book objects.
BookService Impl是一个singleton类，使用一个内存映射图(in - memory map)来维护图书对象集合。
For example, Figure 2 shows a Workflow class that needed to create customer objects by means of a persistence mechanism.
例如，图2显示的workflow类需要通过持久性机制创建customer对象。
For example, Figure 2 shows a Workflow class that needed to create customer objects by means of a persistence mechanism.
例如，图2显示的workflow类需要通过持久性机制创建customer对象。
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