带材备用量 strip storage

备用容量 margin capacity ; reserve capacity ; idle capacity

备用冗余量 standby redundancy

事故备用容量 [电] emergency reserve capacity ; emergency standby capacity

系统备用容量 system reserve capacity

检修备用容量 reserve capacity for repair

备用油量 reserve

装机备用余量 Installed Reserve Margin

备用能量 idle capacity