無線電波長 的英文怎麼說
中文拼音 [wúxiàndiànbōzhǎng]
無線電波長
英文
radio wavelength- 無 : 無Ⅰ動詞(沒有) not have; there is not; be without Ⅱ名詞1 (沒有) nothing; nil 2 (姓氏) a surn...
- 線 : 名詞1 (用絲、棉、金屬等製成的細長的東西) thread; string; wire 2 [數學] (一個點任意移動所構成的...
- 電 : Ⅰ名詞1 (有電荷存在和電荷變化的現象) electricity 2 (電報) telegram; cable Ⅱ動詞1 (觸電) give...
- 波 : Ⅰ名詞1 (波浪) wave 2 [物理學] (振動傳播的過程) wave 3 (意外變化) an unexpected turn of even...
- 長 : 長Ⅰ形容詞1 (年紀較大) older; elder; senior 2 (排行最大) eldest; oldest Ⅱ名詞(領導人) chief;...
- 無線電 : radio; wireless無線電愛好者 radio amateur; amateur radio; 無線電報警 radio warning; 無線電報務員 ...
- 無線 : wireless無線電報 wireless telegram; radiotelegram; 無線話筒 radio microphone ; 無線裝訂 unsewn binding
- 波長 : [物理學] wavelength波長標準 [光學] wavelength standards; 波長測量 wavelength measurement; 波長常...
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Commercial radio broadcasters have used long waves for nearly 60 years.
將近60年以來,民用的無線電廣播一直用的是長波。In radio communication, either short or long waves may be used
無線電通訊可以採用短波也可以採用長波。For a x - directed line current with lengh much smaller than a wave length, the e - field pattern on coordinate planes in 3 - d space in the region from much smaller than line length to one or two wave length, the synthesized pattern by summation of the field of many line segments of hertz dipoles is independent of the number of segments, i. e. same field as a single hertz dipole
以水平面上三角形甚小於波長線電流為例,分割為若干小段之赫芝偶極所加總合成在三度空間任意座標平面上距離從甚大於線長到一兩個波長區域之電場場型與分割小段數量無關,即等同於一單一赫芝偶極之場型。Wireless is exactly the same thing as light and heat, except that its wave length is immeasurably longer
無線電與光和熱完全一樣,除了其波長要長得多。By means of 4 dual - frequency gps receivers over china, the tec in the ionosphere during solar flare on nov 22, 1998 is calculated. the results indicate that the flare, the x - ray level of which is x3. 7, cause obvious tec enhancements in the ionosphere, the largest tec enhancement caused by the flare is about 1. 25 tecu. the characteristic of this method to study such ionospheric disturbances caused by flares is analyzed. it is concluded that this method can be used to study the ionosphere disturbances caused by solar flare, and can get more ionospheric disturbances information because of the special satellite constellation
此次耀斑爆發引起了設在北京的高頻多普勒長達15min左右的無線電短波中斷。通過對gps得到的電離層tec進行分析發現:此次耀斑造成了大面積的電離層tec的增加,耀斑爆發引起的最大tec增幅在1 . 25個tec單位左右利用高精度的gps數據處理方法可研究耀斑引起的電離層擾動。另外,還分析了由gps計算的tec的時空變化特點。Interstellar hydrogen will emit a characteristic wave with wavelength 21cm. most of the sources of this wave are gas clouds in the spiral arms. second to the 21cm emission, the radio wave emitted by the molecular gas clouds in the arms are also good spiral arm tracers
在旋臂中的氫氣分子云,會發射出波長為21厘米的無線電波,只要探測這些無線電波在天空中的強度分佈,便可推算出旋臂的結構。The underwater - radio buoy for use as obtaining the ocean " s acoustical parameters is a underwater acoustic signals record system which has long distance radio remote control and data transmit function. the technology key of the dissertation study is that under the requirements of the system the monitor and record equipment on the acoustic source vessel, the monitor and record equipment on control vessel command and control the work slate of the buoy system by radio data transmitting mode of short wave transmitter - receiver
海洋環境參數獲取浮標監測系統屬于具有長距離無線電遙控?數傳功能的水下聲信號接收記錄系統,本論文研究目標的技術關鍵在於根據系統要求,指揮船和發射船監控記錄設備通過短波電臺以無線數傳方式,對浮標系統的工作狀態進行指揮和控制,浮標則通過同一短波通道向指揮船上報浮標方位、工作狀態、關鍵數據及非常狀態下的報警信號等。Detecting a magnetic field surrounding an earth - like exoplanet would prove a promising sign for finding extraterrestrial life
此外,使射電望遠鏡遠離地球上用於通信的短波長無線電波的喧擾,可以讓天體物理學家們以前所未有的細致度觀測早期宇宙。Moreover by pointing the telescope away from the din of shorter - wavelength radio waves that are used for communication on earth, astrophysicists would be able to see the early universe in unprecedented detail
此外,使射電望遠鏡遠離地球上用於通信的短波長無線電波的喧擾,可以讓天體物理學家們以前所未有的細致度觀測早期宇宙。This gamma radiation is absorbed by atoms inside the sun to be reemitted at slightly longer wavelengths
核能在太陽的核心被釋放為高能的伽馬射線。這是一種電磁射線,就象光波和無線電波一樣,只是波長要短得多。The nuclear energy is released at the sun ' s center as high - energy gamma radiation, a form of electromagnetic radiation like light and radio waves, only of very much shorter wavelength
核能在太陽的核心被釋放為高能的伽馬射線。這是一種電磁射線,就象光波和無線電波一樣,只是波長要短得多。Not particularly through radio communication, except on certain wave lengths that are absorbed by the atmosphere. but as points of departure for exploration they ' ll be very useful
不是,尤其不能用無線電聯系,除非通過某些可以被大氣層吸收的波長進行聯系。至於從科學探索的角度出發,這些空間站是非常有用的。By means of two - way radio communication called telemetry, or remote control, one can send wavelengths round trip to a brain transmitter in a person ' s head
依靠雙向的無線電波傳輸的方式,叫做遙感勘測,或遠程控制,一個能傳送波長往返從一個人的頭腦里到傳輸器。The radio waves are called “ frequency shift ” signals and can flow within a certain wavelength area
無線電波被稱做「頻移」信號,並在一個固定的波長范圍內傳播。Fig. 3 integrated wind profiler and rass at sha lo wan. the rectangular antenna in the middle transmits and receives radio waves
中間的長方形天線作用是發放和接收無線電波,周邊的四個圓柱形擴音器則向空中發出聲波。Which will eventually form stars of spectral types g, k or m. t tauri stars are surrounded by a huge cloud and they are very young, with low surface temperature. they emit most of their light in the infrared region and they appear red. a general principle is, a violent reaction will give out short wavelength waves, like gamma rays or x - rays ; while a gentle process will radiate long wavelength waves, like radio or infrared
,這類星最後會演化為g k或m型恆星,金牛座t型星為表面溫度低而非常年青的恆星,四周被星雲所圍繞,所以這種星顏色偏紅,較容易在紅外線波段找到一個普遍的原則是,如果活動越激烈,則所放出的光波波長越短,主要會為伽瑪或x射線如果活動溫和,則會發放出如無線電波或紅外線等長波長電磁波。Much later heinrich hertz demonstrated radio waves in a primitive manner
隔了相當長一段時間,赫茲用一種簡單的方法證明了無線電波的存在In studying the law of the wireless electric wave propagation, one can combine rt with fdtd, and take the advantages of each other. using the rt to compute the field except for the area to be computed by fdtd, and making the field as the fdtd ' s excition source, fdtd can compute the field in the small part, and can get many points field at one time, so it can provide the information for the designing installing and tuning wireless devices
對于室內無線電波傳播的研究,可以結合rt與fdtd ,使兩者取長補短,發揮各自的優勢,利用rt可以計算出(除將採用fdtd計算的區域以外)場,將該場作為fdtd的激勵,利用fdtd就可以計算出細微處的場,並可以一次精確計算出多個點的場,從而為無線設備的設計、安裝與調試提供可靠的信息。Antenna span, for one, is dictated by the type of broadcast it captures ; an incoming radio - frequency wave resonates best when an antenna ' s length is one half that of the wavelength
原因之一是,天線的全長取決于要擷取的播送類型;如果天線的長度是波長的一半,就能讓傳來的無線電頻率波達到最佳共振。During the ceremony, mr. c y lam, director of the hong kong observatory, recalled that the gathering of meteorological observational data from the mainland relied upon the reception of short wave radio broadcast by mtc colleagues. the morse code broadcasts were skillfully decoded into textual messages, and which were kept in good conditions
天文臺臺長林超英于會上憶述:從前接收中國內地氣象觀測數據,是依靠氣象電信中心同事細心收聽短波無線電廣播,把資料從摩斯電碼morse code一一編譯成文字報文,並完好的保存下來。分享友人