There are two kinds of message encoding available in WSDL: literal and SOAP-encoding.

WSDL中有两种消息编码可用：literal和SOAP编码。

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Defines a method that can import custom policy assertions for message encoding and that adds the binding elements that implement the policy.

定义一个方法，该方法可导入消息编码的自定义策略断言，并添加实现策略的绑定元素。

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Those include functional modules, related data structure, frames of message encoding, certificate management database, ring of keys, concrete information flows for access control and so on.

完整设计了模型的整个可实现框架：包括各组成模块的功能、相关数据结构和消息编码格式、证书管理库和密钥环的设计，以及具体的访问控制流程等。

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But message-encoding systems are already set up to cope with lost data.

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