Some of the keys to OO are the data encapsulation and the concept of inheritance.
OO的关键包括数据封装和继承的概念。
XML data encapsulation also provides improved privacy and reliability when accessing data, either through the Web or desktop applications.
XML数据封装也提高了访问的机密性和可靠性，无论通过Web还是桌面应用程序访问。
In the same way that we discovered function interfaces by encapsulation and generalization, we can discover class interfaces by data encapsulation.
之前我们对函数接口进行过封装和泛化的处理，现在也可以通过数据封装来改进类的接口。
The voice data encapsulation policy is: for voice data entering Ethernet from PSTN and exchanging among Ethernet, MAC address is acted as addressing object when voice data is encapsulated;
语音数据的封装策略是：由PSTN进入以太网和在以太网内部交换的分组语音数据，封装时以MAC物理地址作为寻址对象；
The voice data encapsulation policy is: for voice data entering Ethernet from PSTN and exchanging among Ethernet, MAC address is acted as addressing object when voice data is encapsulated;
语音数据的封装策略是：由PSTN进入以太网和在以太网内部交换的分组语音数据，封装时以MAC物理地址作为寻址对象；
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