radio frequency rf 中文意思是什麼

radio frequency rf 解釋
射頻，無線電頻率
  • radio : n. 1. 無線電訊[電報，電話]；無線電，射電。2. 無線電廣播；無線電（廣播）臺。3. 收音機。vt. ,vi. 用無線電傳送[廣播]；（向…）作無線電廣播[傳送]；用X射線拍照；用鐳醫治。
  • frequency : n. 1. 屢次，頻仍，頻繁。2. （脈搏等的）次數，出現率；頻度；【物理學】頻率，周率。
  • rf : 1 radio frequency 射頻，無線電頻率。2 range finder 【攝，軍】（測定目標距離的）測距計，光學測距儀...
  1. Ofta has issued a notice earlier to the satellite master antenna television ( smatv ) licensees, class licensees of in - building telecommunications systems, operatorsowners of in - building coaxial cable distribution systems ( ibccds ) ( including communal aerial broadcast distribution ( cabd ) systems, closed circuit television ( cctv ) systems, cable television ( ctv ) systems ) to alert the residents that they might need to adjust their vcrs or other equipments to avoid using channel 35 and 37 as radio - frequency ( rf ) output channel for connection to the television sets

    電訊管理局已就此事向本港衛星電視共用天線系統牌照持牌商、樓宇內置電訊系統類別牌照持牌商，以及大廈內同軸電纜系統營辦商擁有人（包括共用天線分佈系統、閉路電視系統、有線電視系統）發出指引，呼籲有關單位提醒其用戶如有需要可調整錄影機或其他器材，避免使用頻道35及37作為接駁電視機的訊號接收頻道。
  2. The scrambling and descrambling technologies include non - disturbing frequency method, analog base band disturbing method, the radio - frequency signal disturbing method, the digital disturbing method for the analog signal and the digital signal disturbing method, etc. after the introduction a project based on the compression of the rf synchronous information is formulated

    本文綜述了目前常用的幾種主要的電視信號的加解擾技術，如非擾頻加解擾技術、模擬基帶加解擾技術、射頻信號加解擾技術、模擬信號的數字處理加解擾技術以及數字信號加解擾技術等。
  3. Zno thin films were deposited on silicon ( si ) and glass substrate by reactive radio frequency sputtering ( rf ) technique with zinc target in the mixed gas of ar ando2, and used zno buffer improving the quality of zno thin film. the effects of parameters on the thickness, composition, texture, morphology, optical properties and electrical properties of zno thin films had been systematically investigated by means of xrd, xps, sem, afm, pl and hall test system

    採用x射線衍射（ xrd ） 、 x射線光電子能譜（ xps ） 、掃描電子顯微鏡（ sem ） 、原子力顯微鏡（ afm ） ，光致發光譜（ pl ）和霍爾效應測試技術系統研究了濺射工藝和退火工藝對zno薄膜的厚度、成分、織構、表面形貌、光學性能和電學性能的影響規律。
  4. Boron nitride ( bn ) thin films were deposited on si substrates using the conventional radio - frequency ( rf ) sputtering system, with hexagonal boron nitride ( hbn ) target and working gas of argon ( or mixture of nitrogen and argon )

    使用射頻濺射（ rf ）系統，靶材為燒結的六角氮化硼（ hbn ） ，工作氣體為氬氣（或氬氣和氮氣的混合氣） ，在硅襯底上沉積氮化硼薄膜。
  5. In the present works, a self - consistent model describing the dynamics of radio - frequency ( rf ) sheath was established. the effects of collisions on the rf sheath dynamics, distributions of ion energy and angle incident on the substrate and the etching profiles were investigated numerically

    本文建立了一套自洽的碰撞射頻等離子體鞘層理論模型，系統地研究了碰撞效應對等離子體鞘層的物理特性、離子入射到基板上的能量分佈和角度分佈以及刻蝕剖面的影響。
  6. Since the envelope of modulated signal fluctuates, these methods generate unwanted intermodulation distortion ( imd ) products in a nonlinear radio frequency ( rf ) power amplifier ( pa ). so it is necessary to use linearization technique to reduce the adjacent channel interference ( aci )

    但包絡變化的調制信號經過非線性射頻功放后會產生交調分量，因此必須採用線性化技術來減少由此產生的鄰道干擾。
  7. Either the boron nitride ( bn ) thin films with different cubic phase content were deposited on n - type si ( 111 ) and fused silica substrates by radio frequency ( rf ) sputtering using two - stage deposition process. the films were characterized by fourier transform infrared ( ftir ) spectroscopy. the transmittance te ( ) and reflectance re ( ) were obtained as a function of incident photo wavelengths and the thickness of films was measured by alpha - step. the absorption coefficient was calculated from te ( ) and re ( ). the optical band gap ( eg ) of the films was determined by effective medium form of formula containing eg

    本文還研究了立方相含量與光學帶隙的關系，在n型si （ 111 ）片和熔融石英片上沉積出不同體積分數的立方氮化硼薄膜，薄膜的成分由傅立葉紅外吸收譜標識；用紫外-可見分光光度計測量了沉積在石英片上的bn薄膜的透射光譜te （ ）和反射光譜re （ ） ，薄膜的厚度用臺階儀測得。
  8. With the development of social economy and science technology, rf ( radio frequency ) card technology is more broadly applied by all kinds of trades, specially such as mass transit, wireless communication identify finance trade and safety - defend etc we use usually magnetic card or touch ic ( intelligent card ) in the past, but the shortage is that the card is read - write low efficiency frictional waste and short life, so that it ca n ' t guarantee the reliability of system for long term running

    隨著社會經濟和科技的發展，射頻卡技術越來越廣泛地應用於各種行業，特別是公共交通、無線通信、身份識別、金融交易和安全防衛等行業。過去，智能卡應用領域常採用磁卡或接觸式ic卡，但由於讀寫速度慢，易磨損，使用壽命短，無法保證系統長期運行的可靠性和方便性。
  9. Therefore, the diagnostics of electrical and optical characteristic of plasma form the basic respects of plasma diagnostics. the author reports in detail in the dissertation the experimental investigation on the phenomena of some common discharge systems at typical operation status such as dc glow ; rf ( radio frequency ) glow and microwave ecr ( electron cyclotron resonance ) discharge

    創新之處： （ 1 ）提出了雙原子分子轉動分辨發射光譜的擬合方法，並利用擬合方法進行了氮氣直流輝光放電產生的第一負帶轉動分辨光譜和磁控濺射沉積cnx膜過程中cn基團的振動帶的轉動線型擬合，獲得了相應的轉動溫度。
  10. The method can measure the following parameters, ( pulse attitude ) pa, ( pulse width ) pw, ( time of approach ) toa, snr, ( radio frequency ) rf, pulse envelope characteristic parameters and intra - pulse modulation parameters with a high precision and a high discrimination

    該演算法能夠分析雷達信號的脈沖脈幅、脈寬、到達時間、信噪比、載頻、脈沖包絡特徵參數和脈內調制特徵參數。
  11. Sic film was coated on the surface of 316l stainless steel by substrate bias - assisted radio frequency ( rf ) sputtering as tritium permeation barrier ( tpb ) of first wall and blanket in fusion reactor

    採用分步偏壓輔助射頻（ rf ）濺射法在316l不銹鋼表面制備了sic薄膜。掃描電鏡（ sem ）觀察表明膜緻密、均勻、與基體結合牢固。
  12. Cubic nitride boron ( c - bn ) films have been prepared at room temperature ( 25 ) by radio frequency plasma enhanced pulsed laser deposition ( rf - pepld ), assisted with substrate negative bias. in this paper, we primarily studied the effect of laser energy density, radio frequency power, substrate bias and depositing time on the growth of c - bn films, and analyzed the formation process and mechanism of c - bn films deposited by rf - pepld method at room temperature

    本文採用偏壓輔助射頻等離子體增強脈沖激光沉積（ rf - pepld ）方法在常溫下（ 25 ）制備立方氮化硼（ c - bn ）薄膜，初步研究了薄膜沉積參數：激光能量密度、射頻功率、基底負偏壓和鍍膜時間對立方氮化硼薄膜生長的影響，並分析了常溫下用rf - pepld方法沉積立方氮化硼薄膜的形成過程和機理。
  13. The c - bn thin films were deposited on si substrates using the conventional radio - frequency ( rf ) sputtering system. the c - bn / si thin film heterojunctions have been fabricated with doping into n - type ( p - type ) semiconductor by implanting s ( be ) ions into them. i - v curves of bn / si heterojunctions were obtained by the high resistance meter, c - v curves of bn / si heterojunctions were obtained by the c - v meter

    使用rf射頻濺射系統，在si襯底上沉積氮化硼薄膜，用離子注入的方法在制備好的bn薄膜中分別注入s和be ，成功的制備了bn / sin - p和bn / sip - p薄膜異質結，用高阻儀測得bn薄膜表面電阻率和bn / si薄膜異質結的i - v曲線，用c - v儀測得bn / si薄膜異質結的c - v曲線。
  14. For the sake of making user randomly communicate between gsm900 and dcs1800 networks with a single handset, this thesis devoted to design and realize a rf ( radio frequency ) subsystem for gsm900 / dcs1800 dual band handset according to gsm 05. 05 protocol provided by etsi, which the structure of single board can realize gsm900 / dcs1800 dual band of the handset

    為了使用戶可用一部手機在gsm900 dcs1800兩個移動通信網上自動漫遊通話，本論文根據歐洲電信標準學會（ etsi ）提出的gsm05 . 05協議，設計實現gsm900 dcs1800雙頻段手機中射頻子系統。它單片的實現了手機的雙頻段gsm900 dcs1800 ，而且隨時可以根據網路的需要，實現無縫（不斷線）自動切換。
  15. To require multiplex licensees to encourage video cassette recorder ( vcr ) users to make use of the audio - visual inputoutput to replace the radio - frequency ( rf ) connection ( paragraph 4. 9 )

    規定數碼頻道持牌機構鼓勵卡式錄影機用戶改以聲頻視頻輸入輸出端取代射頻接頭用以接駁電視機（第4 . 9段） 。
  16. It used to test mobile radio frequency ( rf ) field shown in both index bar and value to judge normal mobile transmission and rf output

    具檢測手機射頻場強功能，以射頻電壓指示燈及射頻電壓值表示，從而判斷正常的射頻輸出及手機的發射情況。
  17. In future information society, space optical communication will replace radio frequency ( rf ) & microwave communication as dominant position in field of wireless communication because of it ' s unparalleled advantage

    在未來的信息社會中，空間光通信技術因其無可比擬的優勢，將取代目前無線電（ radiofrequency - rf ）和微波通信在無線通信領域中的主導地位。
  18. The video simulator is of significant flexibility and commonality. so long as the simulation software is changed, simulation of different radar signals can be implemented. the video simulator can dominate radio frequency ( rf ) equipment to export rf pulse to implement the function of radar signal environment integrated simulation system

    模擬器控制射頻設備輸出的射頻脈沖，既可作為注入信號直接輸入雷達偵察接收機，也可以放大到足夠的功率后通過天線輻射，作為微波暗室的輻射源，實現雷達信號環境一體化模擬系統的功能。
  19. In this thesis, an ultrasonic anti - collision system can be used in garage or when airplanes moving on ground is introduced, which is based on radio frequency ( rf ) technology. the system also has short distance wireless communication function

    本文提出了一種基於射頻（ rf ）技術、具有短距離無線通信功能、應用於機庫內或飛機作地面移動時的超聲波防撞系統。
  20. By improving the process technologies, si - based active devices, for example, mosfet ' s and bjt ' s et al, demonstrate an extremely high f, f and fmax, which is sufficient for radio frequency ( rf ) / microwave applications

    對硅基有源器件，如mosfet 』 s和bjt 』 s等，通過改進工藝技術，可以得到很高的特徵頻率f _ t和振蕩頻率f _ （ max ）性能，能夠滿足射頻微波應用的要求。
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