然后可以将氢气输入到存储系统中，并在需要附加或备用电源时用于发电。

The hydrogen gas could then be fed into a storage system and used to generate electricity when additional or backup power is needed.

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在备用配置中，备用服务器在等待生产服务器发生故障时是空闲的。

In a standby configuration, the standby server will be idle while it waits for the production server to fail.

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在11.1中，备用服务器只允许应用程序读取数据。

In 11.1, the secondary servers only allowed applications to read data.

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