metallic circuit
Telegraphy
noun
A telegraphic circuit in which the return path of the current is through a metal conductor (e.g. a wire) rather than through the earth.
Origin
Mid 19th century.
| 单词 | metallic circuit |
| 释义 | metallic circuitTelegraphy noun A telegraphic circuit in which the return path of the current is through a metal conductor (e.g. a wire) rather than through the earth. Origin |
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