单词	ionosphere
释义	ionospherei‧on‧o‧sphere /aɪˈɒnəsfɪə $ aɪˈɑːnəsfɪr/ noun Word Origin WORD ORIGINionosphere Origin: 1900-2000 ion + -sphere (as in atmosphere) Examples EXAMPLES FROM THE CORPUS High in the thermosphere lies the ionosphere, where the dominant ion is H +. In terms of radio propagation, varying electrical conductance in the ionosphere influences either the absorbency or reluctance of radio emissions. It attempts to modify the electric currents in the ionosphere during a display of the lights and to observe the results. Project waterhole has reinforced earlier theories that electric currents in the ionosphere cause the strange phenomenon of the Northern Lights. Surface magnetization or an ionosphere can also provide a magnetosphere. These high frequency radio programmes can be bounced off the ionosphere which at certain high frequencies acts like an electrically charged mirror. These studies help us to understand the coupling between magnetosphere and ionosphere, and complex natural phenomena such as the aurora. This also produces most of the ions in the Cytherean ionosphere. the ionosphere the part of the atmosphere which is used to help send radio waves around the Earth
随便看	bird dog bird flu birdie Bird, Larry bird of paradise bird of passage bird of prey birdseed Birds Eye bird's-eye view birdshot birdsong bird table bird-watcher bird-watching biretta Birkenstocks Birmingham Birmingham Six Birnam Wood biro birth birth certificate birth control birthday

英语词典包含52748条英英释义在线翻译词条，基本涵盖了全部常用单词的英英翻译及用法，是英语学习的有利工具。