backward wave 中文意思是什麼

backward wave 解釋
反向波，回波
  • backward : adv 向後，在後，在後方；倒，逆；迴向原處。 lean backwards 往後靠。 spell backwards 倒拼；誤解，曲...
  • wave : n 〈美海軍〉女志願軍人〈見 WAVES 條〉。n 1 波浪；碎浪； 〈the wave（s）〉 〈詩〉海。2 波動；波狀...
  1. Subnanosecond millimeter relativistic backward wave oscillator, based on superradiance mechanism, was a novelty microwave device developed in last few years. the dependence of peak power on the square of the density of electron beam is almost linear

    基於超輻射機理的亞納秒毫米波微波器件是近幾年發展起來的一種新型微波器件，其輻射功率與參與束波互作用的電子束密度的平方成正比關系。
  2. Using the particle - in - cell ( pic ) model, a 8 millimeter relativistic backward wave oscillator underlying superradiance mechanism was gotten, the influence on both operation frequency and radiation efficiency of the guiding magnetic field, the diode voltage, the beam current and the beam radius as well as the corrugation structure were also presented

    採用pic方法，通過數值模擬優化設計了超輻射狀態下的8毫米相對論返波振蕩器，分析了引導磁場、二極體電壓、電子束流、電子束半徑、周期慢波結構等對器件的輻射功率及輻射效率的影響。
  3. Research on x - band inner coaxial disk - loaded relativistic backward - wave oscillator

    波段內同軸膜片加載相對論返波振蕩器的特性研究
  4. Measurement of the electrical properties of microwave tubes. part 8 : backward - wave oscillator tubes - " 0 " type

    微波管電性能的測量.第8部分:回波振蕩管
  5. The backward - wave oscillator ( bwo ) is one of the promising devices that can produce high - power microwaves and is intensively investigated because of its merits such as compact structure, high efficiency and good stability

    相對論返波振蕩器是有發展前途的高功率微波源之一，具有電磁結構緊湊、效率高和運行穩定等特點，在國際上受到廣泛重視。
  6. Backward - wave tube

    后進波管
  7. Backward wave oscillator tube

    返波振蕩管
  8. Based on the backward propagation concept, we evaluated the feasibility of reconstructing the image of elastic wave sources and scatterers

    依據逆時傳播的觀念以評估重建彈性波源及散射體影像的可行性。
  9. The view from her bedroom window now showed the occasional figure skidding and hurtling through the streets, his head twisting backward as he ran, as if fearful of the wave that was to overwhelm him

    這時，從她臥房的窗戶看出去，能見到有個路過的人匆匆穿過街道；那人邊跑邊回頭望，似乎害怕被身後的狂瀾吞沒。
  10. Backward wave oscillators with coaxial structure : dispersion characteristics and pic simulation

    同軸波紋返波管色散特性研究及粒子模擬
  11. Design of start part of slow wave structure in relativistic backward wave oscillator

    相對論返波管慢波結構的起始端設計
  12. Particle simulation of compact l - band coaxial relativistic backward wave oscillator

    波段同軸相對論返波振蕩器的粒子模擬
  13. Backward wave magnetron

    返波式磁控管
  14. Optimization and simulation of a relativistic backward wave oscillator with a slow wave structure

    相對論返波管慢波結構的優化設計和數值模擬
  15. The variation of db magnitude attenuation and phase delay of reflection is uniformly proportional to distance along the line toward the direction of reflection, where the phase delay is 360 degree per wave length, the db attenuation per meter is twice the one way db attenuation per meter of forward or backward wave

    沿傳輸線之反射，即反向傳播與正向傳播電壓沿傳輸線之相量比，其相位落後及分貝衰減沿反射方向之變化則正比于線長，相位落後為每半波長三百六十度，每米之分貝衰減為正向波或反向波單程每米之分貝衰減之兩倍。
  16. Experimental study of backward wave oscillator with resonant reflector operating at low magnetic field

    帶諧振腔反射器的低磁場返波管實驗研究
  17. Employing the self - consistent nonlinear theory, the wave beam interaction and the wave developing with time in the subnanosecond millimeter relativistic backward wave oscillator were theoretically analysised

    本論文採用自洽非線性理論，理論分析了相對論返波振蕩器中注波互作用及亞納秒電子束與波在微波器件中隨時間的演變過程。
  18. Instantaneous propagation of the voltage sum of forward wave and backward wave, namely the standing wave, is not standing still except in case of total reflection

    傳輸線上瞬時弦波電壓等速傳播之正向波與反向波合成之駐波，除非是全反射，並非如其名稱停駐不前。
  19. In the digital ultrasonic flaw detectors, backward - wave signal is sampled and changed through the highspeed a / d converter, and we ' ll get a large number of datas. because datas are not all be used to draw testing curve, they must be compacted. lt is necessary to compress so much datas, so data - compaction instrument must be designed and used. here introduces the principle of data - compaction instrument, and designs a exclusive instrument using isp which may change compression point and automatically provide 1024 consecutive addresses of outside data storage unit

    在數字化超聲波探傷中，回波信號經高速a d采樣變換后，會得到大量的採集數據。但在探傷曲線的描繪中並不是用到所有數據，因此要對這些數據進行壓縮處理，這就需要用到數據壓縮器，這里介紹了一種應用在線可編程技術及器件實現對大量采樣數據進行快速壓縮的方法，並設計了一種新型的專用isp數據壓縮器，該壓縮器具有壓縮點數可調，可自動提供1024個連續的外部數據存儲單元的地址等特點。
  20. Backward wave oscillator

    反向波振蕩器
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