但在同一时刻只有一条业务信道能够转换为保护信道。

Only one traffic channel can be switched to the protection channel at any giver time.

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它对电力的生产、输送、分配应用起着转换、控制、保护和调节作用。

It to power production, transmission, distribution application plays conversion, control, protection and regulatory role.

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几秒钟后，屏幕转换到屏幕保护状态。

After a few second, the screen switch to the screen saver.

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几秒钟后，屏幕转换到屏幕保护状态。

After a few second, the screen switch to the screen saver.

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