backup power supply中文什么意思

例句与用法

1. data's on backup power supply
   数据在备用能源上
2. no backup power supply is required . save much energy bill in the long run
   全天候，在阴天和夜晚，利用平时储蓄的能源，继续发光。
3. dc power supply and backup power supply for the operation of equipment used in electricity utility and nuclear power stations
   电力系统、核电站等设备操作直流电源及备用电源。
4. it is therefore necessary to have a backup power supply such as the electricity grid to meet the demand when the electricity generated by the renewable energy system is unable to provide the power required
   当可再生能源未能提供足够电力，则须要由后备电源（例如市电）补充，以应付电力需求。
5. this unit is particularly designed for monitoring 400v feeder with backup automatic switch . it could accurately measure and calculate : voltage, current, frequency, active power, reactive power, power factor and energy . when bus gets into trouble, it can perform the function of automatic switching to backup power supply
   该单元是特别针对400v馈线备自投而设计的，它具有测量母线的电压、电流、频率、有功功率、无功功率、功率因数以及有功电度、无功电度等电参数的功能；当母线出现故障（过压或欠压）时，能够完成两组母线的自动投切，即备自投的功能。