| 单词 | Morse key |
| 释义 | Definition of Morse key in English:Morse keynoun Telegraphy
OriginMid 19th century; earliest use found in George Prescott (1830–1894). Definition of Morse key in US English:Morse keynoun Telegraphy
OriginMid 19th century; earliest use found in George Prescott (1830–1894). |
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