| 单词 | radio compasses |
| 释义 | radio /rāˈdi-ō/noun (pl rāˈdios)
Of, for, transmitted or transmitting by electromagnetic waves transitive verb and intransitive verbTo communicate by transmitting (a radio message) ORIGIN: L radius a rod, spoke, radius, ray radio altimeter see under altimeter radio amateur noun A person licensed to send and receive radio messages privately on certain shortwave bands radio assay noun Analysis of a substance from the radiation it emits radio astronomy noun
radio beacon noun An apparatus that transmits signals for direction-finding radio communication noun Wireless telegraphy or telephony radio compass noun A radio direction-finding instrument radio fix noun The identification of a ship's or aircraft's position from radio signals it emits radio frequency noun A frequency suitable for radio transmission, about 3kHz to 300GHz (radio-frequency heating heating, such as dielectric heating, by means of a radio-frequency electric current) radio galaxy noun A galaxy emitting a particularly high level of radio-frequency energy radio ham noun (informal) A radio amateur radio microphone noun A microphone with a miniature radio transmitter, and therefore not requiring any cable radio pill noun An ingestible capsule containing a tiny radio transmitter that will send out information about bodily processes radio spectrum noun The range of radio frequencies radio star noun A discrete source of radio waves in outer space, generally corresponding with no visual object and known only by radio astronomy radio station noun
radio telescope noun An apparatus for the reception, analysis and transmission in radio astronomy of radio waves from and to outer space radio wave noun An electromagnetic wave of radio frequency |
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