两者的分别，是在说明那一个波(wave)的波长(wavelength)。顾名思义，即short wave radiation 是指一些波长短的波，通常是指比可见光波长为短的波，如紫外光(ultra-violet radiation)。而long wave radiation 是指一些波的波长比可见光长的波，如红外线，微波等。 物理学告诉我们，波长愈长的波，其...
IT is now well-known that all long-distance radio communication takes place by means of electric waves reflected from one of the ionised regions of the atmosphere, the time of travel of the waves from the emitting station up to the reflecting layer and back to the earth being usually a ...
Shortwave radio is your way to tune in. And of course, you get the powerful sound and great reception that Etón is known for. So whether you're tuning in to a station that broadcasts from around the corner or across the globe, you're assured of a clean, clear listening experience....
short•wave (ˈʃɔrtˈweɪv) n.,adj.,v.-waved, -wav•ing.n. 1.a radio wave shorter than that used in AM broadcasting, corresponding to frequencies of over 1600 kilohertz: used for long-distance reception or transmission. ...
Long distance short - wave radio frequency broadcasting uses: Aground wave Bionospheric waves Cdirect wave Dsky waveSubmit A : Long distance radio broadcasts use short-wave bands. R : Ionosphere reflectes waves in these bands. AIf both Assertion & Reason are true and the reason is the corre...
Short Wave Radio歌曲mp3 Long Vacation(悠长假期)演唱,种子音乐提供免费在线试听播放,如果您喜欢请分享给您的朋友!
I strongly recommend getting a good short wave radio to really enjoy the short wave listening hobby. One with a variable bandwidth means you can pull in full treble and bass sounds for strong stations. My Tecsun PL-880 has the option to bring in 9 kHz of width, which makes Short Wave ...
Interpretation of sea surface height anomaly (SSHA) and wind forcing of first baroclinic mode Rossby waves is considered using linear inviscid long-wave dy... DANIEL L. CODIGA,PETER CORNILLON - 《Journal of Physical Oceanography》 被引量: 845发表: 2003年 Chemical, microphysical, and radiative ef...
Short Wave Radio歌词 Long Vacation(悠长假期) 發佈於:2004年 播放:0次 時長:04:48 播放 歌詞 lrc 歌詞 Wake up to me I wanna be your morning call Listen to me I'm your audio bulletin board I sing to u , I play with u Through the traffic hours I'll stay with u , and love ...
Densitometry of the single autoradiogram (with both the UVA- and the UVB-irradiated samples) was performed using Quantity One software (Bio-Rad, Hercules, CA). ACKNOWLEDGMENTS This work was supported by a grant from the American Cancer Society to T.M.R. and by a grant from the Deutsche ...