USSD service system adopts connection-oriented conversational mode, which is an ideal carrier for conversational services.
USSD系统采用面向连接的交互式会话方式，是会话类业务的理想载体。
Service-Oriented Architecture is a new information system solution mode, which proposed service-oriented thinking beyond the past object-oriented architecture.
SOA架构是近年来出现的一种新的信息系统解决模式，它在以往面向对象、面向架构的基础上更进一步提出了面向服务的思想。
Service-Oriented Architecture is a new information system solution mode, which proposed service-oriented thinking beyond the past object-oriented architecture.
SOA架构是近年来出现的一种新的信息系统解决模式，它在以往面向对象、面向架构的基础上更进一步提出了面向服务的思想。
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