| 单词 | 无线电波 |
| 释义 | 〔radiophotograph〕A photograph transmitted by radio waves, each image point being reproduced by a received electric impulse.无线电传真：通过无线电波传送的照片，图像上的点由接收到的每一个电脉冲重新合成〔WAN〕A communications network that uses such devices as telephone lines, satellite dishes, or radio waves to span a larger geographic area than can be covered by a LAN.广域网络，宽域网络：利用电话线路、卫星信号接收器或无线电波等设备的通信网路，其覆盖的地域大于局域网络〔quasar〕A starlike object that has a large red shift and emits powerful blue light and often radio waves.类星体：一种类似星体的物体，它有很大的红移并放射出大量的蓝光，而且经常还有无线电波〔Hertz〕German physicist who was the first to produce radio waves artificially.赫兹，亨利希·鲁道夫：(1857-1894) 德国物理学家，第一位人工发射无线电波的人〔beam〕Following a radio beam. Used of aircraft.跟随无线电波。用于指飞机〔fading〕Fluctuation in the strength of radio signals because of variations in the transmission medium.时强时弱：由于传播中介的变化而引起的无线电波信号的强弱波动〔home〕To be guided to a target automatically, as by means of radio waves.自动导向：通过无线电波被自动导向某一目标〔radar〕A method of detecting distant objects and determining their position, velocity, or other characteristics by analysis of very high frequency radio waves reflected from their surfaces.雷达：通过对从物体表面反射的较高频无线电波的分析发现远处的物体并测定其位置、速度或其它特征的〔pulsar〕Any of several celestial radio sources emitting short, intense bursts of radio waves, x-rays, or visible electromagnetic radiation at regular intervals, generally believed to be rotating neutron stars.脉冲星：若干能发出无线电波的天体之一，能以有规律的间隔发出短促且强烈的无线电波、X射线或肉眼可见的电磁放射，普遍认为它们是旋转磁中子星〔Ryle〕British astronomer. He shared a 1974 Nobel Prize for physics for using radio telescopes to probe outer space with great precision.赖尔，马丁：(1918-1984) 英国天文学家。因用无线电波望远镜极清晰地观察外太空，而获1974年诺贝尔物理奖〔occultation〕The progressive blocking of light, radio waves, or other radiation from a celestial source during such a passage.星掩：在上述运行中，从一天体源发出的光，无线电波或其它射线被逐渐掩蔽〔decametric〕Of, relating to, or being a radio wave of wavelength between one and ten decameters.十米波的：无线电波的波长在十米和百米之间的〔ionosphere〕A region of the earth's atmosphere where ionization caused by incoming solar radiation affects the transmission of radio waves. It extends from a height of 50 kilometers (30 miles) to 400 kilometers (250 miles) above the surface.电离层：地球大气层的一个区域，该层由于太阳辐射而导致的电离影响无线电波传输。它从距地表50公里(30英里）的高度延伸到距地表400公里(250英里）处〔transparent〕Permeable to electromagnetic radiation of specified frequencies, as to visible light or radio waves.可透过的：可以让某些频率的电磁辐射通过的，如可见光或无线电波 |
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