虽然这类服务发现很简单，但效率却不高，因为它要求先熟悉Web服务和服务提供者的联系信息。

Although this type of service discovery is simple, it is not very efficient since it requires prior knowledge of the Web service, as well as the contact information for the service provider.

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在业务级别，服务使用者和服务提供者使用服务规范来了解进行服务交互能够实现什么功能行为。

At a business level, the service consumer and service provider use the service specification to understand what functional behavior is achieved by engaging in a service interaction.

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定购管理包也包含相关的服务接口、服务消费者和服务提供者。

The order management package also contains related service interfaces, service consumers, and service providers.

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