power attenuation 中文意思是什麼

power attenuation 解釋
功率衰減
  • power : n 1 力，力量；能力；體力，精力；（生理）機能；〈常 pl 〉才能。2 勢力，權力，權限；威力；政權；權...
  • attenuation : n. 1. 變薄，變細。2. 減少，減弱。3. 稀釋。4. 【物理學】衰減。
  1. According to the minimum detectable power required by the spaceborne laser altimeter for 200km maximum range and the analysis result of the effect between the maximum range and the equation ' s each parameter, the specifications for noncooperative regulable attenuation setting were fixed on

    根據月球探測激光高度計實現200km所需的最小可探測功率，各影響因子與最大測程關系的分析，確定非合作目標可調衰減法裝置的技術指標。
  2. Based on the analysis of the effect on the maximum range of the equation ' s each parameter and the traditional method of extinction ratio, the noncooperative regulable attenuation - measure the minimum detectable power of laser altimeter on the condition of constant miss probability by attenuating the laser power transmitting to the diffuse reflected simulant target - was put forward

    在傳統的消光系數法基礎上，根據對月測距方程各系數的影響權重分析，提出了非合作目標可調衰減法，即：通過對漫反射模擬目標，衰減出射激光功率，在一定的漏警概率條件下測量激光高度計的最小可探測功率。
  3. Optical power meter real - time monitor optical power of each optical cable, and control computer gather the value of optical power attenuation circularly, if some values excess the limit, the computer control optical switch to connect another spare optical fiber with otdr card, control the otdr card to test the optical fiber, and then find the malfunction point accurately. the system require software system to run with hardware devices tother. this paper analyze requirement and technical feasibility in software system, ooa and uml are used to analyze software and abstract the class diagram

    通過光功率計對每條光纜中的備用光纖進行實時的監控，測試光功率的衰減值，主控計算機不斷循環的對每個光功率模塊進行數據採集，並記錄每路光信號的光功率衰減值，然後進行分析處理，如發現達到設定的光功率衰減門限值就報警，並控制光開關的切換，將故障光纜中的另一備用光纖與otdr卡連接，通過otdr卡對該光纖進行測試，從而確定故障點。
  4. 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。
  5. Great intermittent noise, wide variety of impendence along with the load and great attenuation of signals have restricted the further utilization of power line

    但是，電力線通信通道存在間歇性噪聲大、阻抗隨負載變化大、信號衰減大等缺點，嚴重製約了它的有效利用。
  6. 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。
  7. The calculation shows that the attenuation of hydraulics oscillation relates to power, but other kinetic characteristics don ' t change with work point greatly

    通過計算表明，其水力振蕩衰減速度與出力有關，而系統的其他運動特性隨工況變化較小。
  8. At the same time, the power capacity of the above mentioned antenna is preliminarily analyzed. the results show that in the pass band, their power capacities increase with the frequency on the whole, ranging from 10 ’ s kw to 100 ’ s kw. with the change of the pulse duration of microwaves, the measurement is carried out on the sensitivity of the detectors of the types wb - cd01 and 2087 - 6001 - 00, on the attenuation of the

    通過調整微波脈寬，對wb - cd01型、 2087 - 6001 - 00型等檢波器的靈敏度，對2082 - 4137系列和tts系列衰減器的衰減量，對rg - 142型微波電纜的衰減量進行了實驗測定，結果表明:在微波脈寬大於40ns時，檢波器靈敏度基本無變化;當微波脈寬在20 ~ 40ns時，檢波器靈敏度會有一定變化，變化趨勢和程度與檢波器的型號有關;而上述型號的衰減器和微波電纜的衰減量幾乎不受微波脈寬的影響。
  9. This paper describes the definition of “ return wave attenuation ” and “ reflect attenuation ”, introduces theoretically the meaning of “ return wave attenuation ” on view point of power, points out the difference between “ reflect attenuation ” and “ return wave attenuation ” and demonstrates the test connection used as “ return wave attenuation ” measurement before being really “ reflect attenuation ” measurement

    論述了「反射衰耗」與「回波衰耗」的定義，從理論上推導出「回波衰耗」在功率角度上的含義，闡明了「反射衰耗」與「回波衰耗」之間的區別，也論證了歷來作為「回波衰耗」測試的試驗接線實際是「反射衰耗」測試的試驗接線。
  10. Using the dsd models and forward scattering amplitude computed by the least squares fitting method, the specific attenuations at l - 400ghz have been computed and analyzed, the parameters of " power law " relation between specific attenuation and rainfall rate are obtained. the specific attenuations in qingdao, guangzhou and xinxiang are compared with itu - r specific rain attenuation models

    利用平均雨滴尺寸分佈和點匹配法計算的雨滴的前向散射數據計算和分析了青島、廣州和新鄉地區1 ? 400ghz特徵雨衰減特性，得到了特徵雨衰減與降雨率的指數關系參數，並與itu - r （ internationaltelecommunicationunion - radiocommunication ）特徵雨衰減模式進行了系統的比較研究。
  11. Optical attenuation, widely applied in many fields, can be adopted to acquire single - photon sequence that is foundational in quantum key distribution. we obtain single - photon sequence by precisely controlled optical power distribution along outlets of manifold consist of beam splitter instead of the attenuation by time sequence due to loss

    用線性分束耦合器形成多個輸出口，將光強的時序衰減變為光強沿輸出口的空間分佈，研製出了量子保密通信用的精密控制的強衰減器，實現了對光子數的精密控制。
  12. 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。
  13. 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。
  14. Numerical simulations were performed and results show that significant attenuation of radiated acoustic power can be obtained, and sound radiation cancellation performance becomes better in low and medium frequencies

    進行了數值模擬，模擬結果表明，應用壓電片能有效地抑制聲吶設備中障板聲輻射，抑制中低頻的聲輻射效果更好。
  15. Firstly, the characteristics of radiation propagation and attenuation in the atmosphere, and the power response of a contrast - limited optoelectic system are analyzed, the apparent contrast model of a target is developed, and the detection range equation dependent on the aerosol extinction coefficient and range parameter are derived

    首先，分析了紅外波段大氣輻射傳輸與衰減、對比度限制光電成像系統功率響應特性，建立了目標表現觀對比度模型，並推導出了由氣溶膠消光系數和距離參量確定的探測距離方程。
  16. According to structural characteristics of multi - phased alloy steels and the properties of ultrasonic propagation, microstructures characterization with different heat treatment processes ( normalizing, quenching / annealing, quenching plus low tempering, quenching plus high tempering ) for three steels ( 40cr, 38crmoal, gcrlssimn ) was studied experimentally by using ultrasonic methods. ultrasonic velocity, relative attenuation coefficient, and power spectral analyses were researched on the same samples respectively, on the basis of theory and experiment, the sensitivity and other characterizations of the three methods used to distinguish different microstructures were compared

    根據具有多種相結構合金鋼不同熱處理轉變產物的組織特點，以及超聲波在其中的傳播規律，利用超聲波速度、相對衰減系數以及功率譜分析三種方法，對三種鋼（ 40cr 、 38crmoal及gcr15simn ）不同熱處理（正火、淬火退火、淬火+低溫回火及淬火+高溫回火）轉變產物的顯微組織進行了超聲表徵研究。
  17. Second, the mode fields of a strip waveguide and some slab waveguides have been simulated by applying finite - difference time - domain ( fdtd ) method. the curvature radius ; vicinity coupling ; transition loss and power attenuation of a s - shape bend waveguide have been analysed numerically by employing wide angle finite - difference beam propagation method ( fd - bpm ), as well as the coupling loss of optical fiber and waveguide. in addition, the framework of the s - shape waveguide laser has been

    其次，應用時域有限差分法，結合波導模式理論對條形與平面波導進行了模場模擬;應用廣角有限差分光束傳播法，對s形彎曲波導的曲率半徑、鄰近耦合、過渡損耗、功率衰減以及波導與光纖的各種耦合損耗進行了數值分析，並在此基礎上，對s形波導激光器的結構作了初步設計。
  18. 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。
  19. Such problems as the attenuation of dc elements and sine waveform, voltage sag and frequency deviation should be taken into account in order to analyze the transient process in the power system

    要分析電網的暫態特性，還必須考慮衰減直流分量和衰減正弦波，以及電壓缺口和頻率偏移等問題。
  20. This equation solving method overcomes the shortcomings of simulation software on thermal field analysis, strongly complements the commonly used 1 - d temperature distribution to analyze thermo - optic devices in literature. the results avoids complicated form of solutions provided by fourier transform method, and thereafter lend itself to analyze the influence of thermo - optic to attenuation characters and power consumption in waveguide

    這種方法克服了模擬軟體在熱場分析上的不足，是對現有文獻多數採用一維溫度分佈作為熱光器件分析的有力補充，也避免了傅立葉變換法的復雜形式，為後面分析熱光效應對器件衰減性能和功耗的影響打下了基礎。
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