设备类型独立性：代理体系结构必须能够支持广泛的具有不同能力的硬件和软件组件。

Device type independence: The surrogate architecture must be able to support a wide range of hardware and software components with different capabilities.

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网络类型独立性：代理体系结构必须能够容纳不同种类的连接性技术。

Network type independence: The surrogate architecture must be able to accommodate a diverse range of connectivity technologies.

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分布式对象，也称为对象请求代理(Object Request Broker, OR b)：此方法侧重于代码重用和语言独立性。

Distributed objects, also known as the object Request Broker (ORB) : This approach focuses on code reuse and language independence.

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