这个系统包括两个送风机（其中一个备用）、空气管和氧化空气分布管。
The system consists of two air blowers (one of them as a common spare), air piping and grid distribution pipe.
文中剖析了冷备用运行方式的不足，提出了一种基于通风机热备用的倒机方法。
Deficiencies of cold standby are analyzed, and a novel way of main fan switchover based on hot standby is put forward.
注意避免两台风机因负荷不平衡而呈现喘振，查看备用冷却风机自启动。
Pay attention to avoid the two Typhoon aircraft due to load imbalance and present surge, see the alternative cooling fan since the start.
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