予備 よび電源 でんげん

yobidengen

1. Not an emergency power source.; Not a backup power source.

1. Was a backup power source.; Was an emergency power supply.

1. With backup power; Using backup power

1. Backup power; Emergency power

1. It is not a backup power source.; It is not an emergency power source.

1. Not a backup power source.; It's not a backup power supply.

1. Was a backup power source.; Was an emergency power supply.

1. Backup power supply.; Spare power supply.

1. Is not a backup power source.; Is not an emergency power source.

1. Wasn't an emergency power source.; Wasn't a backup power source.

1. Probably a backup power source.

1. Was not a backup power source.; Was not an emergency power source.

1. Wasn't an emergency power source.; Wasn't a backup power source.

1. Backup power, likely.; Probably a backup power source.

1. Was not a backup power source.; Was not an emergency power source.

1. If/when the backup power supply…; If the backup power supply were…

1. If there were a backup power supply; If a backup power supply existed

1. If/when backup power; If there is backup power