1.An arrangement of electromagnetic radiation by frequency and wavelength. As a whole, the electromagnetic spectrum ranges from radio waves to gamma rays. The visible spectrum is a band of colors seen when white light is broken up according to wavelengths, as when passing through a prism or str...
1.seismic disturbance range of frequencies地震扰动的频率范围 2.the entire frequency range of electromagnetic waves.电磁波的全部频率范围。 3.upper limit of the nominal of use for frequency标称使用频率范围上限 4.High stability of capacitance and DFversus wide temperature and frequency range.高温度,频率...
1.The frequency of the waves transmitted by a specific radio station. 2.A frequency within the range at which radio waves are transmitted, conventionally from 3 hertz to 300 megahertz, immediately below the range of microwave frequencies in the electromagnetic spectrum. ...
Radar systems transmit electromagnetic, or radio waves. The reflected radio waves can be detected by the radar system receiver. The frequency of the radio waves used depends upon the radar application and are commonly classified according to Table 1. The required antenna size is proportional to wav...
A two-scale model of the spectrum of turbulence inhomogeneities is used to investigate frequency fluctuations of radio waves propagating in a turbulent atmosphere. It is shown that the frequency fluctuations are 'sensitive' to the value of the spectral index, and that in some cases it is necessar...
radiofrequency [rey-dee-oh-free-kwuhn-see] Phonetic (Standard)IPA noun ,pluralra·di·o·fre·quen·cies. thefrequencyof the transmitting waves of a given radio message or broadcast. any frequency within the range ofradio waves,microwaves,and electromagneticwirelesssignals.:RF, rf...
In the example, the volumes consist of a single guide 20, the circular section 2 has been deformed in 3 and 4, the electron beam is obtained from the barrel 10, 12, 14. < / p & gt; & lt; p & gt; application: generators of radioelectric waves of power to a few tens of ...
百度试题 结果1 题目 Radio frequency () waves are a mode of transportation for information and carriers for RF waves are air, copper wire and fiberoptic cable. ( ) 相关知识点: 试题来源: 解析 正确 反馈 收藏
aRadio transmission involves the use of part of the electromagnetic spectrum. 无线电广播介入对一部分的用途的电磁波频谱。 [translate] aenergy depend on the frequency. For example, visible light has a frequency between 能量取决于频率。 例如,可见光有一个频率之间 [translate] aand radio waves have ...