local battery

短语

自给电池

词形变化

local batteries 复数 local batteries

释义与例句

n.
  1. 1.

    In telegraphy, the source of power that actuates the telegraphic station recording instruments, as distinguished from the source of power that furnishes current to the line.

  2. 2.

    In telephony, a source of local power for a telephone instrument, as opposed to being powered from the central office.