- redundant design
- 备用: reserve; spare; alternate; b ...
- 设计: devise; project; plan; desig ...
- 备用设备, 备用设施: stand-by facility
- 备用设备: alternate equipment; alternate facility; backup device; backup facility; emergence set; emergency apparatus; emergency equipment; emergency unit; off premise; off-premise; off-stream unit; reserve equipment; spare apparatus; spare equipment; spare unit; spareequipment; stand by equipment; stand by facilities; stand by facility; stand by plant; stand-by plant; standby equipment
- 热备用设备: hot stand by
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