attenuation distance 中文意思是什麼

attenuation distance 解釋
衰減段長度
  • attenuation : n. 1. 變薄，變細。2. 減少，減弱。3. 稀釋。4. 【物理學】衰減。
  • distance : n 1 距離，路程。2 遠隔，遠離；遠處，遠方。3 （時間的）間隔，長遠，長久。4 懸殊。5 隔閡，疏遠。6 ...
  1. The records we used are mainly from three parts : strong ground motion data before 1992 ' s ; data from scec ( south california earthquake catalog ) ; nsmp ( national strong motion project ). after we developed the attenuation laws, we analysis the attenuation characteristics for the pga and sa with different damping ratio. here we mainly concentrate on the effect of the distance and the magnitude

    在回歸出中小地震的衰減關系后，本文對峰值加速度（水平向與垂向） 、加速度反應譜（阻尼比分別為0 . 005 、 0 . 02 、 0 . 05 、 0 . 1 、 0 . 2 ）的衰減特性進行了分析，影響因素主要考慮了震級與距離這兩個方面。
  2. Now the diffuse earthquake has been used in the earthquake hazard analysis for the nuclear power plant. so we collect some records from the small - moderate earthquakes with magnitude between 4. 0 - 6. 5 and distance from the source less than 70 km. then we develop the attenuation laws of these earthquakes expecting to reflect the attenuation laws of the diffuse earthquakes

    通常為近源中小地震的彌散地震影響是核工程安全性評價中的重要內容，為滿足核工程地震安全性評價工作的需要，本文選取了一些震級介於4 . 0 ? 6 . 5之間，距離小於70km的中小地震的近場記錄，對這些地震的衰減規律進行了研究。
  3. Atmospheric attenuation of scene contrast is studied theoretically on the basis of radiometric principles, and the relationships between the measured maximal detection range for a target and visibility distance under two possible conditions are obtained

    根據輻射度學原理，從理論上研究景物對比度在大氣傳輸中的衰減，得到了在兩種可能的條件下所測得的目標最大探測距離與能見距離的關系。
  4. 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。
  5. The system can resolve the noise and impedance on the power line and obviously improve the abilities of anti - disturbance and successful rate of communication. at the same time, the software realy method and arithmetic is also introduced to settle the problem of attenuation and increase the distance of carrier communication, it can satisfy the need of remote reading meter system

    該系統有效地克服了電力線噪聲和阻抗變化等干擾因素，提高了抗干擾能力和通信成功率，同時提出軟體中繼的思想和演算法並加以實現，進一步抑制了線路衰減快的問題，使載波通信的距離增加，滿足了遠程抄表系統的要求。
  6. What is the maximum distance that 10base - t will transmit data before signal attenuation affects the data delivery

    什麼10base - t將傳輸資料在訊號衰退影響資料傳輸之前最大距離
  7. Since, point lights have position also, the distance from the surface to the light also affects the intensity. this is known as distance attenuation

    因為，點光源有位置，所有光到達表面的距離會影響到光照亮度。這讓我們了解到距離衰減。
  8. Primarily there are two aspects : 1 ) the calculation model of the value of land classifying units - - model of time distance attenuation. in the calculation model of the value of land classifying units, author brings forward the model of time distance attenuation. in this model adopting the network analysis, and by establishing the road network, and proceeding path analysis, computing the time distance, then proceed the exponential attenuation or straight line attenuation on time distance, get the value of influence factor of the land classification unit

    主要有兩個方面： 1 、定級單元分值計算模型? ?時間距離衰減模型在定級單元分值的求取模塊中，提出了時間距離衰減模型，模型中採用網路分析的方法，通過建立道路網路，進行路徑分析，求取時間距離，進而按時間距離進行指數衰減或直線衰減，得到定級單元因素因子影響分值。
  9. For example if you have an object 1cm thick and you set the attenuation distance to 1cm, it means half the energy of all light rays passing through it will be absorbed, so the light falling through it will be half as bright on the other side

    如果你有一塊厚1厘米的玻璃，設置衰減距離為1厘米，則表示光透過玻璃後有一半被吸收了，或理解為光的亮度降為原來的一半。
  10. Does this look like what is required for the distance attenuation calculation

    計算距離衰減值的時候要用使用到它。
  11. Second, the problems of long - distance data communication, signal attenuation, interference from outside in the measurement system

    二、測試系統中遠程數據通信，傳輸線上的信號衰減及抗干擾問題。
  12. This paper discusses some problems in supersonic velocity measurement, and expounds, in the form of numerical computation, the availability results about supersonic energy attenuation adapting to distance, as well as the influential factors on the measurement

    摘要該文討論了超聲波聲速測量實驗中出現的幾個問題，並通過數值計算，說明了超聲波能量隨距離的增大而形成的衰減趨勢，並對影響測量精度的因素進行了討論。
  13. Ultrasonic distance measurement is the new distance measurement. this thesis studies the ultrasonic distance measurement, and reasearchs ultrasonic attenuation in the atmosphere and hydraulic oil, analyses the factors which inflence measurement precision

    文中對超聲波在空氣中、液壓油中的衰減情況進行了分析，並對在空氣中、液壓缸中的影響測量精度的幾個因素進行了分析。
  14. The characteristic of channel is the basic of plc research, including the transmission lines, channel noise, and attenuation. the ability of anti - jamming, speed and distance of transmission are decided by the mode of modulation. for example, the fsk, bpsk, cdma and ofdm are main modulations in the plc

    通道的研究是根本，電力線通信其他研究內容都是建立在通道研究的基礎上，內容主要包括傳輸線特性、通道噪聲和通道衰減等;調制解調技術決定了電力線通信的傳輸速率、傳輸距離和抗干擾能力，它是電力線通信實現的關鍵，目前電力線通信中主要的調制方式有fsk 、 bpsk 、 cdma 、 ofdm等。
  15. During designing hardware circuit, we have used the supreme limitation to raise driving - ability and raise the distance of measurement to returning ware by taking some measurements just like multi - polar enlarging, according to the ultrasonic characteristic of index attenuation when it ' s spreading because we need to measure longer distance ( from several meters to dozens of meters )

    在硬體電路的設計中，由於需要測的距離較長（幾米到十幾米） ，針對超聲波振幅在傳播時呈指數衰減的特性，最大限度地提高驅動能力，對回波進行多級放大，達到了設計要求。
  16. Based on 266 strong ground motion records from 15 earthquakes in america, an attenuation relationship was used to relate energy spectra to earthquake magnitude, source - to - site distance, and site class. the purpose of this study is to make a foundation of energy - based design and seismic hazard analysis. the main achievements of this study could be summarized as follows : 1

    本文的主要工作就是利用所掌握的地震動記錄，採用兩步回歸法對地震動的各種能量參數進行回歸分析，找出地震動的能量參數隨震級、距離等參數的衰減關系，為基於能量的方法能夠應用到抗震設計及震害評估等實際工程中奠定基礎。
  17. There is a good relativity between the magnitude and distance. this kind of relativity is inherent and inevitable. if the coefficients of attenuation model were solved simultaneously, errors in measuring magnitude would affect other coefficients

    強震記錄的震級和距離是具有相關性的，通常距離大的強震記錄往往對應大的震級，這一點早被眾多的研究者所認同。
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