Invoke performs a synchronous invocation, while the BeginInvoke and EndInvoke functions follow the Asynchronous Programming Model pattern.

当BeginInvoke和EndInvoke函数是异步程序模式时，调用就是同步调用。

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You can use SCA to invoke service components through both synchronous and asynchronous programming styles.

可以通过同步和异步编程方式使用sca调用服务组件。

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