Microphone
A Dictionary of Military Terms · 1918 · p. 14
An instrument for intensifying and making audible very feeble sounds, useful in many situations in military operations.
Bu kavram başka kaynaklarda da geçiyor
French-English Dictionary of Military Terms (1918)
Hawkins' Electrical Dictionary (1915)
Chamber's Twientieth Century Dictionary (1908)
Nuttall Encyclopedia (1907)
An Illustrated Dictionary of Medicine, Biology and Allied Sciences (1907)
The Student's Medical Dictionary (1896)
An Illustrated Encyclopedic Medical Dictionary (1894)
The Standart Electrical Dictionary (1892)
Dictionary of Science, Literature and Art (1854)
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