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...
radio waves 释义 无线电波 实用场景例句 全部 radio wavesfrom outer space 来自外层空间的无线电波 《牛津高阶英汉双解词典》 Sound waves, light waves, andradio waveshave a certain frequency, or number of waves per second. 声波、光波或无线电波等都有特定的频率,或者说是每秒的波数。
(11) the light pulses of the pulse laser is detected and corresponding electrical output signals are generated, which form the radio frequency waves, wherein the pulsed laser (10) with an optical reference signal is operated stabilized, so that the repetition frequency of the light pulses is ...
Radio waves control everything from cellphones to automatic door openers.───从手机到电动门,几乎所有东西都要由无线电波来控制. Sound waves, light waves, andradio waveshave a certain frequency, or number of waves per second.───声波、光波或无线电波等都有特定的频率,或者说是每秒的波数。
MALE PROFESSOR: So are there are any questions before we continue our discussion of different types of electromagnetic waves? Um, today we'll focus on radio waves, and specifically, very low frequency radio waves. Ah Yes, Tim?MALE STUDENT: Are you going to talk at all about the difference...
What are radiofrequency (RF) waves and how are they produced? The electromagnetic spectrum used in NMR corresponds to "radio waves" used in commercial communications. MRI involves the absorption and emission of energy by nuclei at a specific resonant(Larmor) frequency.The Larmor frequency scales di...
Radio frequency (RF) is a measurement representing the oscillation rate of electromagnetic radiation spectrum, or electromagnetic radio waves, from frequencies ranging from 300 gigahertz (GHz) to as low as 9 kilohertz (kHz). With the use of antennas and transmitters, an RF field can be used for...
and the waves produce an alternating current in it, with a frequency that matches that of the radio waves. Anyone with a receiver can tune it to this frequency to pick up the radio waves so they are suitable for broadcasting (for example, radio and TV programmes) to large numbers of ...
radio waves Definitions(1) Advertisement Wavesat the end of theelectromagnetic spectrumwith the lowestfrequency(less than 300megahertz) and the longestwavelength(from a few feet to many miles). Because of their low frequency, radio waves carry very littleenergycompared to otherelectromagnetic waves. ...
摘要: PROBLEM TO BE SOLVED: To provide a radio wave absorber which shows a superior absorption property with respect to both TE waves and TM waves even if they are incident aslant, and also to provide a radio frequency anechoic chamber using the same....