Inheritance and polymorphism are fundamental to object-oriented (OO) programming.

继承和多态性是面向对象(object - oriented, OO)程序设计的基础。

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Traditional object technology provides good code reuse with the encapsulation, inheritance and polymorphism.

传统的对象技术通过封装、继承及多态提供了良好的代码重用功能。

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Using the encapsulation, inheritance and polymorphism of OOP, a foundation class library of small satellite software is designed, the detail design of all base classes is introduced.

利用OOP的封装性、继承性和多态性，设计小卫星软件的基本类库，介绍各个基本类的具体设计思想。

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