如果您想将不同版本的客户和服务器组件混合使用并且使其兼容，那么EJB stub、tie和可串行化值对象就需要具备版本兼容性。

If you want to mix and match different versions of client and server components, then the EJB stubs, ties and the Serializable Value Objects need to be version-compatible.

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在对事务安全性分析的基础上提出了安全事务模型和安全事务正确性标准-安全冲突可串行化(SCSR)。

Based on analysis of transaction security, a secure transaction model is given. Moreover, a correctness criterion for secure transactions, secure conflict serializability (SCSR) is proposed.

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系统开发采用线程池定时器组件、串行通信、多线程等技术，从而保证系统的实时性和可扩展性。

The thread pools timer component, serial communication, and multithreading techniques were used to guarantee it as a real-time and scalable system.

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