bù​duàn​diàn​xì​tǒng

uninterruptible power supply

  1. continuous
    uninterrupted; unceasing; constant
  2. electricity
    electricity; electric power; a form of energy used to power lighting, heating, and machinery
  3. system
    A whole composed of parts that work together to perform a function or achieve a goal; a series or group of related things forming a complex whole.