With nine engines on the first stage, Falcon 9 can reach orbit even if one or more fails.
猎鹰9号的第一级有9个引擎,即使一个或多个引擎故障,它仍然可以到达预定轨道。
If the first command fails, the second command does run.
如果第一个命令失败,则第二个命令才会运行。
The default behavior is that only one me is active on one cluster member and will only become active on the other cluster member if the first one fails (see Figure 3 above).
缺省行为在于,仅有一个ME在一个集群成员上是活动的,并且仅当第一个集群成员失败时才会在另一个集群成员上变为活动的(请参见上面的图3)。
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