Synchronous calls can be programmed, but with timeouts so that if the call can't come back in a certain time, the calling Web service can be unlocked to exit from the system.
同步调用可以通过编程来实现，但带有超时设置，如果调用在一定的时间内未返回，调用Web Services可能取消锁定，从而从系统退出。
The system may be widely used in time synchronization in Synchronous Digital Hierarchy (SDH) communication network and exchange and other timing application cases.
该系统可应用于SDH通信网时间同步、交换机时间同步等高精度定时领域。
The relationships between the design parameters of composite control and synchronous following control system are analyzed, and real-time dynamic experiment and operation results are also provided.
文中还分析了复合控制器参数与同步控制系统控制器参数之间的关系，给出了实验室内动态实时仿真与电站运行结果。
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