The control now returns to the connect function, which sleeps until the protocol layer wakes up-indicating that the connection is now ESTABLISHED or that there has been an error on the socket.

控制现在返回到connect函数，该函数处于睡眠状态，直到协议层唤醒—指示连接现在是ESTABLISHED，或套接字上存在错误。

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There is a connection guiding, real-time detection, fault judging, alarm records, sound-light alarm, the screen prompt, safety preferred real-time automatic control function.

有连接导引、实时检测、故障判断、报警记录、声光报警、屏幕提示、安全优先的实时自动控制功能。

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The stability of multivariable nonlinear control system is discussed in connection with the generalized frequency response function matrix.

基于广义频率响应函数矩阵，讨论了多变量非线性系统的稳定性问题。

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