radiotelegraph n. 无线电报机, 无线电报术
radiotelegraph[ noun ]- telegraphy that uses transmission by radio rather than by wire
<noun.communication>
- the use of radio to send telegraphic messages (usually by Morse code)
<noun.artifact>
Radiotelegraph \Ra`di*o*tel"e*graph\
(r[=a]`d[i^]*[o^]*t[e^]l"[-e]*gr[a^]f), n. [Radio- +
telegraph.]
A wireless telegraph.
[Webster 1913 Suppl.]