radio 中文
EN
[ˈɹeɪdiˌəʊ] [ˈɹeɪdiˌoʊ] 
US 名无线电, 收音机 维无线电
- 無線電波（英语：Radio）或射頻波是指在自由空間（包括空氣和真空）傳播的電磁波，其頻率 300GHz 以下（下限頻率較不統一，在各種射頻規範書， 常見的有三：3KHz～300GHz，9KHz～300GHz，10KHz～300GHz）。無線電技術是通過無線電波傳播信號的技術。
- 無線電技術的原理在於，導體中電流強弱的改變會產生無線電波。利用這一現象，通過調製可將信息加載於無線電波之上。當電波通過空間傳播到達收信端，電波引起的電磁場變化又會在導體中產生電流。通過解調將信息從電流變化中提取出來，就達到了信息傳遞的目的。
- 麥克斯韋最早在他遞交給英國皇家學會的論文《電磁場的動力理論》中闡明了電磁波傳播的理論基礎。他的這些工作完成於1861年至1865年之間。
FR radio 
- 名词 (Noun)PLradiosPREradio-
- (uncountable) The technology that allows for the transmission of sound or other signals by modulation of electromagnetic waves.
- (countable) A device that can capture (receive) the signal sent over radio waves and render the modulated signal as sound.
- (countable) A device that can transmit radio signals.
- (Internet, uncountable) The continuous broadcasting of sound recordings via the Internet in the style of traditional radio.
- (uncountable) The technology that allows for the transmission of sound or other signals by modulation of electromagnetic waves.
- 动词 (Verb)SGradiosPRradioingPT, PPradioed
- (intransitive, transitive, transitive, intransitive) To use two-way radio to transmit (a message) (to another radio or other radio operator).
- I think the boat is sinking; we'd better radio for help. / I radioed him already. / Radio the coordinates this time. / OK. I radioed them the coordinates.
- (transitive) To order or assist (to a location), using telecommunications.
- (intransitive, transitive, transitive, intransitive) To use two-way radio to transmit (a message) (to another radio or other radio operator).
- 更多范例
- 用于句中
- Over the air, they advertise their product on drive-time radio talk shows and TV news shows.
- In a radio transmitter you modulate the carrier wave; in the receiver you demodulate it.
- TMC coverage is smaller than that of the radio programme carrying the TMC service, therefore white spots do exist.
- 用于句中
Definition of radio in English Dictionary
- 词类阶层 (Part-of-Speech Hierarchy)
- 名词
- 可数名词
- 单数形态
- 不可数名词
- 不可数名词
- 可数名词
- 动词
- 不及物动词
- 及物动词
- 不及物动词
- 名词
- fr radio
- en radioactive
- fr radioactive
- en radiotelephone
- en radios
资料来源: 维基词典
在语法上，这个单字"radio"是一个名词，更具体地来说，是一个可数名词和一个单数形态。它同时也是一个动词，更具体地来说，是一个不及物动词和一个及物动词。