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单词 local battery
释义

local battery

Telegraphy and Telephony (now chiefly historical )
noun
A battery which powers only adjacent telegraph or telephone equipment, as contrasted with a battery that provides current to the line, or with equipment which is powered centrally.
  • In situations where a local battery is used, current sent to a distant instrument or to an exchange is typically generated using a hand-cranked magneto..

Origin

Mid 19th century.

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更新时间:2025/3/9 11:09:58