rf- 中文意思是什麼

rf- 解釋

  • 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. After several years development, sem. test gets our independent standardized laboratory recognized by the authoritative certification institution of tuv rhineland timco engineering and ul etc. the founding of sem. test compliance is to apply professional product emc, rf, safety and rohs testing and certification service for product quality meeting the standard s requirements

    3 .先進的實驗設備sem . test測試設備來自專業的世界知名品牌，主要有美國agilent ， hp ， ketherly ，丹麥k b ，德國r s和中國的aino系列品牌，為測試的精確性提供可靠的數據保障。
  2. Ctcss does not alleviate rf interference

    Ctcss並不會降低無線電射頻信號的干涉。
  3. Meanwhile, cmos technology, due to its mature application in base band uses, draws more and more attentions in rf area

    由於cmos工藝在基帶電路的成熟應用，其在射頻中的地位也逐漸被人們所重視。
  4. A miniature low power bidirectional rf communication system for biotelemetry applications

    一種微型低功耗生物遙測雙向射頻通訊系統
  5. Verification regulation of rf capacitive loss standard set

    高頻電容損耗標準試行檢定規程
  6. The power of the modulated carrier wave is increased by the rf power amplifier

    射頻功率放大器增加了調變載波的功率。
  7. To ensure the security of gi inspection, no approving method has been developed by far to drive the capsule endoscope but utilizing the natural peristalsis of gi tract. the uncontrollability of the capsule endoscope brings on some limitations in its functional extension in inspection, medication and surgery, such as temperature and ph measuring, medicament spraying, sampling, on - line sample analyzing, laser incising and rf cauterizing

    膠囊內窺鏡目前還沒有實用的主動驅動方法，只能利用消化道自然蠕動作為膠囊內窺鏡前進的動力。由於膠囊內窺鏡不可控，限制了它的功能擴展，比如壓縮空氣噴藥、吸取組織樣品、在線樣品分析、激光切割、射頻燒灼等。完善的膠囊內窺鏡系統需要在現有基礎上加入安全有效的驅動控制，可調整姿態、行進及定位，從而擴大膠囊內鏡檢查的適應癥、安全性與多功能性。
  8. Cebus pl and rf symbol encoding sublayer physical layer conformance

    Cebuspl和rf符號編碼子層物理層一致性
  9. 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。
  10. Characteristics of rf ion source electromagnetic field

    型放電離子源的場特性
  11. 5. detection : the samples were extracted with ethyl ether. the lidocaine in the sample was qualitated by rf and a tlc scanning spectrometry, quantitated by a tlc scanning chromatography and a two points external standard method or a standard curve method

    5 、利多卡因檢測方法:樣品堿化處理后，乙醚提取，薄層掃描檢測，根據利多卡因的rf值結合光譜掃描圖定性，外標兩點法或標準曲線法定量。
  12. Mixers are the key components of many microwave and millimeter - wave systems. the super - heterodyne receiver is always applied in modern communication system, mixer becomes the key component as is at the first part of system. but it is more and more difficult to get the choiceness lo source of the same band with the system is working at high frequency especially in the millimeter - wave. sub - harmonic mixer is a good solution to this problem now. in this circuit we need just half 、 quarter 、 even 1 / 8 of the rf signal frequency. in this paper the design and fabricate of sub - harmonic hmic mixers ( 2, 4 ) at w - band are introduced

    混頻器是微波通信、射電天文學、雷達、等離子物理、遙控、遙感、電子對抗，以及許多微波測量系統中至關重要的部件。在現代通信系統中，毫米波頻段通常採用超外差接收機，混頻器作為第一級就成為關鍵部件。由於在毫米波頻段，同頻段高性能的本振源成本高，技術難度大，採用分諧波混頻技術是解決此問題的有效途徑，只需射頻頻率1 / 2 、 1 / 4甚至1 / 8的本振頻率即可實現混頻。
  13. Verification scheme of rf impedance measuring instruments

    射頻阻抗計量器具檢定系統
  14. A physical model for rf planar spiral micro - inductors

    平面螺旋微電感的物理模型
  15. I want rf jammers on every team member

    我想每個隊員都帶著射頻干擾機
  16. Uses philips modules and high quality, sensible pin photo - diode, provides high rf output, low noise and low non - linear distortion

    採用飛利浦光電模塊和優質量高靈敏度pin光電二極體，輸出電平高，低噪音和較小的非線性
  17. With the established rf front - end system simulation platform, adding the digital modulated baseband signal, this paper simulated the multifold digital modulated signal ’ s transmission, such as 2ask, qpsk, and 16qam. then researches of power compression and phase noise of local oscillation influence the bit error ratio for different modulated system. the designing is satisfied multifold functions request with the high - powered and integrated broadband rf front - end

    隨后在建立的寬帶射頻前端通用模擬平臺上，加入基帶數字調制信號，對多種數字調制格式的信號在該通用平臺上的傳輸作了研究，模擬了2ask 、 qpsk和16qam等調制格式信號的發射與接收，研究了功率壓縮和本振相位噪聲對不同調制的誤碼率影響，實現了滿足多種功能要求的寬帶高性能綜合射頻前端的設計。
  18. Rf card readers mifare mikron

    射頻卡讀卡器mifare mikron
  19. Rf millivolt meter

    Rf毫伏表
  20. Specification for braided 75 ohm flexible rf coaxial drop cable

    75 ohm射頻同軸分接編織軟電纜規范
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