These parts of the stand-by generator are not worth repairing.
备用发电机的这些部件不值得修理。
These parts of the stand-by generator are not worth repairing. I suggest you'd better replace them.
备用发电机的这些部件不值得修理。我建议，你最好换掉它们。
If the stand-by generator engine fails to start, the emergency generator is to be automatically started 30 seconds after the trouble happens.
若备用发电机组不能启动，应急发电机应在故障发生30秒后自动启动。
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