electromagnetic radiation in the radio frequency range:这个表达更侧重于无线电波的物理属性,强调其属于电磁辐射并且在无线电频率范围内。 RF waves:RF是Radio Frequency(无线电频率)的缩写,这种表达更加简洁,常用于专业领域。 radio-frequency electromagnetic waves:这个表达结合了无线电波的两个...
An electromagnetic wave having a low frequency and long wavelength. Radio waves are used for the transmission of both radio and television broadcasts. They also include the microwaves used for cooking. Some celestial objects, such as pulsars, also emit radio waves. See more atelectromagnetic spectr...
so it is very precious. According to the International Telecommunication Union, the frequency range of electromagnetic waves that can be identified by humans ranges from 3KHz to 300GHz. For ease of description, the frequency band from 3KHz to 300GHz is divided into eight...
frequencyradio wavestroposphere radio waves/attenuation by troposphere at 0.4 to 10 ghz, (e/ttroposphere/radio-wave attenuation at 0.4 to 10 ghz in, (e/tNew observations of the tropospheric attenuation at frequencies of 0.408 and 1.407 Ghz have been carried out by a source extinction method. ...
美 英 n.无线电波 网络无线电播音频段;音波;电子波 同义词 n. airwaves,frequencies,radio signals 英汉 网络释义 n. 1. 无线电波
RadioWaves, Inc., an Infinite Electronics company, offers a diverse range of high performance, reliable and innovative microwave and broadband wireless antennas. These cover 1.3 GHz to 86 GHz for point-to-point and point-to-multipoint applications and support the telecommunications, enterprise, indus...
Radio frequency is measured in units calledhertz(Hz), which represent the number of cycles per second when a radio wave is transmitted. One hertz equals one cycle per second; radio waves range from thousands (kilohertz) to millions (megahertz) to billions (gigahertz) of cycles per second. In...
Radio frequency (RF) refers to the rate of oscillation of electromagnetic radio waves in the range of 3 kHz to 300 GHz, as well as the alternating currents carrying the radio signals. This is the frequency band that is used for communications transmission and broadcasting. Although RF really ...
MRI involves the absorption and emission of energy by nuclei at a specific resonant(Larmor) frequency.The Larmor frequency scales directly with main magnetic field strength (Bo), and for clinical MRI lies in the range of tens to hundreds of MHz. These frequencies are part of the electromagnetic...
(amplitude modulation) radio, according toRF Page. AM radio frequency bands fall between 535 kilohertz to 1.7 megahertz, according toHow Stuff Works. AM radio has a long range, particularly at night when the ionosphere is better at refracting the waves back to earth, but it is subject to ...