transmission attenuation 中文意思是什麼

transmission attenuation 解釋
傳輸衰減
  • transmission : n 遞送；傳遞；傳達；傳染；移轉；【機械工程】傳動；傳遞；變速器；聯動機件；【無線電】傳送；發射；...
  • attenuation : n. 1. 變薄，變細。2. 減少，減弱。3. 稀釋。4. 【物理學】衰減。
  1. The paper has founded the model of laser transmission in launch process and the movement model of laser - powered vehicle, and has analyzed the influence on performance of launch system, which was raised by some factors, for instance, the performance of thruster, the attenuation in transmission, the height of mode - transform, the laser power, the air drag force, the launch height, and so on

    本文研究了激光推進微小衛星發射系統的概念和性能。建立了發射過程激光傳輸和激光推進運載器運動模型，分析了推進系統性能、大氣傳輸衰減、模式轉換高度、激光器功率、大氣飛行阻力、發射點高度等因素對發射系統性能的影響。
  2. The optical rotation in er fluids is studied thoericaly. considering the different attenuation in different direction and the theory of light transmission, i derive the expression of rotation angle as function of the angle 6 ( between the electric vector of linearly polarized light and electric field ) and other parameters on the condition of several appropriates and assumptions

    考慮電場作用下電流變液中不同振動方向的線偏振光衰減不同，根據光波在介質中的傳播理論，推導出光通過電流變液的旋光角與（入射線偏振光振動方向與外加電場方向的夾角）及其它參數的關系表達式。
  3. The electric field, magnetic field, critical frequency, surface current, power transmission and attenuation, as well as te and tm modes in waveguides are discussed

    給出計算等效矩形截面波導的te模和tm模、電磁場、臨界頻率、波導壁電流、功率傳輸和衰減的公式。
  4. To ensuring the transmitting quality, the influences of atmospheric attenuation and turbulence to laser transmission is analyzed in the paper

    為了保證無線光通信的質量，本論文還深入分析了大氣衰減效應和大氣湍流效應對激光傳輸的影響。
  5. Because of using of edfa, the attenuation of fibers was not an important transmission limitation. at the same time, dispersion managements and dispersion - supported techniques can be used to improve wdm system performances

    由於edfa的實用化，光纖損耗對系統的限制已不是重要的因素了；同時，色散管理和色散支持技術可以有效地改善色散對系統性能的限制。
  6. Transmission systems and two - ports ; measures for attenuation

    傳輸系統和四埠.衰減的測量
  7. Analyses the characteristics of transmission, natural attenuation, regeneration and superposition of noise

    分析了空調系統噪聲的傳遞、自然衰減、再生和疊加特性。
  8. For recent years, adsl has world widely employed and widely used in many aspects such as vod, remote medical treatment and e - shopping etc. but we noticed that the traditional telephone networks are designed for the transmission of low frequency signals, and the adsl ' s frequency rang is from 0 to 1. 104mhz, so we must confront the signal attenuation, the loop line noise impairments, the crosstalk interferences, the bridge tap reflections and the rf disturbances problems and many other problems when transmitting the adsl signals one the telephone networks

    近幾年來， adsl在世界范圍內得到充分的使用，廣泛應用於視頻點播、遠程醫療、網上購物等各個方面。但是由於電話線網路是專門為傳輸低頻信號而設計，而adsl的頻譜范圍在0 1 . 104mhz內，因此在傳輸adsl信號時，面臨著信號衰減、線路噪聲、串音干擾、橋接抽頭反射和射頻干擾等等多方面的問題，這就要求在adsl開通之前對線路進行一系列的測試。
  9. Radome is designed to protect the antennas from the external environment. however, radome is interfering with the electromagnetic radiation of antenna, which may result in significant degradation of antenna performance, cause transmission attenuation and beam deflection

    天線罩在保護天線不受外界影響的同時對天線的電磁輻射產生某些干擾，使天線的電性能降低，引起天線的傳輸損耗和波束偏移。
  10. Otherwise it decreases with the dielectric constant. since the direction of the particle chains is different from that of microwave transmission, which was considered to have different effect on microwave attenuation. two different erf containers for measuring the microwave transmittance were made

    考慮到微波傳播方向與電流變液顆粒鏈方向不同會造成微波衰減的不同，因此設計並製作了兩種用於測量電流變液微波透射率的電流變液樣品盒。
  11. According to the research of the medium - voltage power line transmission characteristics and frequency - domain modeling of bottom up mode that is to accquire characteristic parameters by theoretical calculation, the characteristic modeling of medium - voltage power line is established, and the suitable parameters which can restrain the signal attenuation is gained

    本文首先通過對中壓電力線傳輸特性的研究，利用從下往上的頻域研究模式，即通過理論計算獲得特徵參數，建立了中壓電力線傳輸通道特性模型，推出了符合中壓電力線傳輸函數變化的參數，可以有效地抑制信號衰減。
  12. From the point of kinematics and dynamics, the author analyses the propagation rules of stress waves in concrete, namely time - space relations, wave amplitude attenuation, dispersion effect and characteristics of transmission of reflected waves and acoustic waves. combining with engineering practices, the author also concluded the main points of low strain detection of integrity of longdiameter underwater cast - in - situ piles, and pointed out that comprehensive and relational utilization of reflected waves method and acoustic wave transmission method can accurately evaluated the integrity of pile shaft and then improve the reliability of detection. 6figs., 3refs

    從運動學和動力學角度，分析應力波在混凝土中的傳播規律：時空關系、波幅衰減、頻散作用以及反射波與聲波透射的特點，結合工程實踐，總結大直徑水下灌注樁低應變檢測的工作要點，指出綜合、合理運用反射波法與聲波透射法，可以較準確地評價樁身完整性，提高檢測結果的可靠性.圖6 ，參3
  13. Seismic data processing practices demonstrate that the seismic convolution model can be used to correct transmission attenuation component by means of impedance inversion, with the merit of avoiding the screen effect of strata

    採用含透射衰減的褶積模型做正演運算，能夠校正地層透射對波阻抗反演結果的影響，尤其能夠消除地層的遮罩現象。
  14. The main contents of this thesis include : ( 1 ) summarize and analysis of the theories on vibration transmission through rolling element bearings ( 2 ) based on the threshold setting and signal ’ s statistical approach, a method for solving the problems of denoise was developed ( 3 ) using sparsity and clustering, the method and hypotheses for underdetermined blind source separation was studied ( 4 ) the method based on potential function clustering was given for underdetermined blind source separation of noisy signals based on the assumption that the input distribution is sparse and the mixture procedure is linear, the attenuation matrix and the delay matrix were estimated by clustering. the approach was experimentally illustrated for the case of m = 2. the separation of the signals from bearing test bed proved that the given methods are available and reliable

    在需求分析和研究現狀分析的基礎上，本論文針對如下內容進行了重點研究: （ 1 ）以滾動軸承為例，對旋轉機械振動信號的傳輸進行了歸納分析; （ 2 ）通過設定某一門限並研究信號間的統計特性，研究了旋轉機械振動信號的盲源分離過程中噪聲消減策略; （ 3 ）應用稀疏信號分析和聚類分析方法，對盲源分離中欠確定問題的假設條件進行探討並對分離方法進行了分析; （ 4 ）採用基於勢函數聚類分析的方法，研究了欠確定前提下含噪聲測量過程中信號盲源分離方法。
  15. To investigate the influence of transmission attenuation of seismic waves in a layer - cake model, the authors formulated a seismic convolution model by considering the coefficient of transmission attenuation, and then provided a new forward algorithm for the model - based seismic inversion of impedance

    摘要研究了地震波在層狀地質模型內透射衰減對地震反射信號振幅的影響，給出了含透射衰減的褶積模型，為基於模型的波阻抗反演提供了一種新的正演方法。
  16. For example, the former vice - chancellor of the cuhk, charles k. kao has replaced copper cables by optical fiber to reduce attenuation in signal transmission, opening the door to the information age

    為了減少訊息能量的流失，前中大校長、光纖之父高錕發明了光纖，取代銅制線路，激起一場通訊事業的革命，打開了光導新世界的大門。
  17. Ruilan s bws3500 broadband wireless access system is capable of solving effectively the fundamental problem of selective frequency attenuation caused by multi - path interference. therefore, it is capable of providing generalized access ( non line - of - sight or quasi line - of - sight transmission )

    瑞瀾公司的bws3500寬帶無線接入系統可有效地解決多徑干擾引起的「選頻衰落」這一根本性問題，因此能夠實現普遍化的接入（非視距或準視距傳輸） 。
  18. System scheme of speech coding plus spread spectrum communication was presented based on a full analysis of noise characteristic, attenuation characteristic and impedance characteristic of low - voltage power line. spread spectrum carrier ( abbreviated as ssc ) technology is adopted to overcome problems existing in signal transmission over power line. high quality, low rate mbe compression algorithm was used to complete speech encoding and decoding

    在對低壓電力線路的噪聲特性、衰減特性和阻抗特性三個方面充分分析的基礎上，本文提出一種語音編碼+擴頻傳輸的系統總體方案，採用擴頻載波（ spreadspectrumcarrier ，縮寫為ssc ）技術克服電力線傳輸信號存在的問題，採用語音合成質量高並具有較低碼率的mbe壓縮演算法完成語音信號的編解碼。
  19. In the hfc network, the uplink channel is applied a spectrum of 5 to 42mhz. although such a spectrum is of good attenuation characteristics, one fact is that other services also share the same spectrum, making the noise introduction a serious concern. also the noise will gradually accumulate, thus severely affecting the transmission performance of cablemodem

    在hfc網路中，上行通道採用5 ~ 42mhz的頻帶，雖然這一頻帶具有良好的衰減特性，但是因為其他服務也採用這一頻帶，所以引入噪聲成了一個嚴重的問題，並且這個噪聲將逐步積累，嚴重地影響cablemodem的傳輸性能。
  20. This novel transmit diversity technique, which combines channel coding, modulation and signal processing at receive terminal, can make full use of the fading multi - path in the wireless communication systems so as to mitigate the signal attenuation. this technique is mainly designed to combat channel fading in downlink transmission by combining the technique of channel coding and that of array diversity, hence increasing the capacity of wireless communications systems and giving diversity gain and coding gain to them

    基於多輸入輸出（ mimo ）的空時編碼技術是實現未來帶寬資源日益緊張的高速無線數據通信系統的重要技術，它結合了通道編碼、調制和接收端的信號處理，能夠充分利用無線通信通道中多散射體環境所造成的多徑，從而提供信號的抗衰落性能。
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