正射反射率 的英文怎麼說

中文拼音 [zhēngshèfǎnshèlǜ]
正射反射率 英文
normal incidence reflectivity
  • 正 : 正名詞（正月） the first month of the lunar year; the first moon
  • 射 : Ⅰ動詞1 （用推力或彈力送出） shoot; fire 2 （液體受到壓力迅速擠出） discharge in a jet 3 （放出） ...
  • 反 : Ⅰ名詞1 （方向相背） reverse side 2 （造反） rebellion 3 （指反革命、反動派） counterrevolutionari...
  • 率 : 率名詞（比值） rate; ratio; proportion
  1. Main conclusions drawn from the analyses of calculating results are as follows : ( 1 ) the microwave absorption of atmosphere gas have obvious attenuation at the wavelengths for cloud detection, thereinto, the water attenuation effect changes greatly, so the 94ghz cloud detecting radar should have water vapor attenuation correction scheme. ( 2 ) when 37ghz and 94ghz radars detect clouds, the difference between the atmosphere and cloud attenuation and the large variety of radar reflectivity conduce the intension of the radar backscatter signals change. ( 3 ) for the thin cloud layer and low water content of cloud, 37 - ghz radar backscatter signals are not as good as 94 - ghz radar, that is to say that the 94ghz radar has better capability in thin clouds detection

    本工作得出如下結論： （ 1 ）大氣氣體的微波吸收在測雲波段產生明顯的衰減，其中水汽衰減效應變化很大；即將上天的空間94ghz測雲雷達必須有水汽衰減訂正方案； （ 2 ） 37ghz和94ghz雷達測雲，由於大氣和雲衰減不同和雷達反射率的很大差異，導致雷達回波信號強弱不同； （ 3 ）對雲層較薄、含水量較少的雲，在不計雷達參數的情況下， 37ghz雷達回波信號不如94ghz測雲雷達，也就是說94ghz對薄雲有更強的探測能力；對雲層較厚、含水量大的雲，由於強衰減的作用， 94ghz雷達回波信號小於37ghz雷達； （ 4 ）從大氣衰減的不利因素方面考慮，空間94ghz雷達測高層薄雲的效果最好；測低層薄雲時需要考慮氣體衰減訂正；因濃厚雲的強衰減作用，探測其中下部的能力大大減弱，不僅要進行衰減訂正，而且要藉助其他信息來反演整個雲層的含水量垂直分佈； （ 5 ）為了獲得從極薄到極濃厚雲的垂直分佈探測能力，未來測雲雷達系統最好採用雙波長甚至三波長（如94 、 37和13ghz ） 。
  2. In order to control the polarization characteristics, the phase retardance mirror must be used. additionally, in order to suppress the reverse wave in ring resonator, the phase retardance mirror must also be used to preserve the polarization characteristics of the reflected reverse wave by suppressor. the conventional film stack ca n ' t satisfy the high power coil development requirement

    另外，通過對高功率coil用環行非穩腔內倒向波抑制的分析表明，為實現倒向波的抑制，倒向波被反饋到腔內正向波中的部分必須保持偏振狀態不變，否則，起不到倒向波抑制的作用，這也需要用到高反射位相延遲鏡。
  3. The feed - back provided by the reflected electron beams reduce the start - up current and the start - up time in a vircator, while the existence of klystron cavity improves the extracting efficiency, hence the radial reflex klystron oscillator with virtual cathode combines the advantages of both devices, becomes a compact, efficient set

    利用虛陰極反射電子束對調制腔的正反饋，可以減小起振電流和起振時間，而且提高了微波產生效率。它是一種結構簡單，緊湊，不需要引導磁場的器件。
  4. With the material dynamic constitutive equation including damage and the effect of stain rate the predictable formula about ballistic limit velocity of fiber composite target. secondly based on the damage feature about ceramic / fiber composite target caused by impact load, analysis model about defense performance of ceramic / composite material target is formed and the predictable formula about ballistic limit velocity is also given. lastly using the reflection and projectile theory of stress wave the paper discusses the design of ceramic / composite material target, optimizes the design of double layer ceramic / composite targets, gains optimal coefficient under certain area density and discusses the variety relationship of area density and thickness with optimal coefficient u nder some ballistic limit velocity 3

    首先，分析了纖維類正交鋪層復合靶板在沖擊載荷作用下的損傷破壞機理，結合包含損傷和應變率效應的材料動態本構方程，建立了纖維復合材料板彈道極限速度的預測公式；其次，根據陶瓷/纖維材料復合靶板在沖擊載荷下的破壞特點，建立了陶瓷/復合材料靶板抗彈性能分析模型，給出了彈道極限速度預測公式；最後，利用應力波反射和透射理論討論了陶瓷/復合材料靶板的設計問題，對雙層陶瓷復合靶板的優化設計進行了分析，給出了在一定面密度下的最佳優化系數，討論了一定彈道極限速度下的面密度和厚度隨優化系數的變化關系。
  5. The daily albedo variation, which is big in the morning and afternoon and smallest at midday, emerge parabola above spring wheat and bare soil surface

    春小麥和裸地兩種不同下墊面的地表反射率日變化均呈現出拋物線特徵，早晚反射率較大，正午反射率最小。
  6. Increasing numbers of men are being diagnosed with prostate cancer in wales ? it is not yet clear whether this is due to increased awareness and the popularity of the psa test, or whether it reflects a growing prealence

    在威爾士，男性患者診斷患有前列腺癌的人數正在呈增長趨勢，目前尚不清楚是否是人們的認識水平提高了還是前列腺特異性抗原檢測水平的普及，或是反射出其發病率正呈增長趨勢。
  7. Increasing numbers of men are being diagnosed with prostate cancer in wales ? it is not yet clear whether this is due to increased awareness and the popularity of the psa test, or whether it reflects a growing prevalence

    在威爾士，男性患者診斷患有前列腺癌的人數正在呈增長趨勢，目前尚不清楚是否是人們的認識水平提高了還是前列腺特異性抗原檢測水平的普及，或是反射出其發病率正呈增長趨勢。
  8. The clues and techniques to improve the resolution of data processing are 1 ) removing the affection of near surface factors on data acquisition, including static correction and noise eliminating technique etc, 2 ) broadening the frequency band of pre - stack seismic data, including amplitude compensation and pre - stack deconvolution etc, 3 ) improving s / n ratio of high frequency and weak reflection signals through multiple coverage with high precision velocity analysis, residual static correction and high - order nmo, raising " dead line of high frequency reflection ", and 4 ) identifying post stack effective reflection frequency band, enhancing dominant frequency and so on

    主要包括：消除近地表因素對資料採集的影響，包括靜校正和噪音壓制技術等；疊前拓寬地震資料領帶，包括振幅補償和疊前反褶積技術等；藉助高精度速度分析、剩餘靜校正和高次項nmo技術，通過多次覆蓋疊加，消除資料中隨機噪聲干擾、提高資料信噪比，尤其是高頻端反射信息的信噪比，改善高頻反射和弱反射信號信噪比，提高「高頻反射死亡線」 ；疊後有限反射頗帶識別、抬高優勢頻率等。
  9. Then, we establish the finite element analysis models of the antenna in different structure layout, and obtain the corresponding frequencies and model shapes. finally, according to the importance of each object, we set up the model of multiple objects that aims to maximize the first natural frequency and minimize the mass. combining orthogonal experiment and variant weighting coefficient method, we formed an effective multiple objects optimized algorithm basing on the neural network and genetic algorithm

    本文首先詳細的敘述了天線結構的各組成單元，闡明了天線反射拋物面的形成原理；然後在ansys軟體環境中建立了不同結構布局下天線的有限元分析模型，分析計算了各種情況下天線的的固有頻率與振型；最後依據天線各指標的重要性，建立了以一階固有頻率最大、質量最小為目標的天線結構多目標優化設計模型，並基於神經網路和遺傳演算法，結合正交實驗和變加權系數技術，形成了一種有效的多目標優化演算法，在matlab平臺下實現了天線的結構多目標優化設計計算程序，求得了天線的最佳結構參數。
  10. The optical system is optimized to achieve 0. 1 u m resolution over a o. lmm diameter image field of view and the mirrors of the objective were coated with mo / si multilayer to provide 45 % reflectance at near - normal incidence angle for 13. 0nm radiation

    經優化設計后， 0 . 1mm像方視場內的成像解析度優於0 . 1 m ；近正入射條件下， schwarzschild微縮物鏡主、次鏡mo / si多層膜的實測反射率為45 。
  11. In the analysis of the frequent spectrum and the reflection coefficients, based on goda ' s two - points method which fit to the normal incident wave, a modified two - points method is derived that can be used to calculate the frequent spectrum and reflection coefficient of the oblique waves from which the frequent spectra of incident waves and reflected waves incoming in arbitrary angular, the bulk reflection coefficient and the frequent spectrum of reflection coefficient could be computed, also from which in theory the waves could be measured in two wave gauges which is disposed at any direction

    為了分析單向不規則波入射波的頻率譜和反射系數，本文在goda用於分析正向不規則波的兩點法的基礎上，提出了可用於斜向不規則波頻譜分離及其反射系數計算的改進兩點法，該方法可用於計算任意波浪入射角的入、反射波譜、總體反射系數和反射系數的頻率譜，並且測量波浪過程的兩浪高儀可在較廣的方向范圍內布置。
  12. Furthermore, the spectrum characteristics of normal seawater and oil polluted water are also analyzed and discussed, from which we reach the conclusions that the transformation method can be used for obtaining reflectance data and airborne hyperspectral data can be used for oil film detection as well

    進一步對正常海水和油污染水體的光譜特性進行分析，通過反射率曲線比較，得出運用基於圖像特徵的反射率處理模型提取光譜信息和運用航空高光譜數據進行海上油污染檢測的可行性。
  13. The conclusions are as follows : the ultrasonic intensity is proportion to the laser intensity ; the ultrasonic induced by a laser line source has much more advantages than by a laser point source, such as stronger energy, higher snr, more directivity and shape ; the intensity of cfpi ' s output signal is linear with ultrasonic vibration velocity, and is effected by incidence angle and scattered angle ; snr will increase by reducing cfpi ' s bandwidth, reducing incidence angle, increasing cavity ' s length and reflectivity

    在分析點光源激勵聲表面波機理的基礎上，求出了線光源激勵的超聲振動的位移表達式，發現線光源激勵的近場區表面波具有波形好，信噪比高，指向性好，幅度強等特點。通過理論推導，得出共焦fabry - perot干涉儀的輸出光強除了與樣品表面的振動速度成正比，並與入射角和散射角有關；適當減小cfpi的帶寬，增加腔長，增大鏡面反射率，或者減小檢測入射角都可以提高系統的信噪比。
  14. In this paper a kind of interferometric optical fiber gyroscopes based on mach - zehnder interferometric principle is proposed. the signals of this novel optical fiber gyroscope transmit along the positive direction, which avoid the interferometric noise, causing by the negative - directional scattering light and reflecting light, and the kerr effect noise. in this novel optical fiber gyroscope the light power ' s utilization efficiency is high, the output signal is strong

    本文提出一種基於mz干涉原理的干涉式光纖陀螺，該種光纖陀螺的光信號採用正向傳輸，避免了後向傳輸光對光源的影響，也避免後向散射、反射光帶來的相干噪聲以及光學kerr效應噪聲，光功率利用率高，輸出光信號大。
  15. They pointed out that modulation wave fronts ( such as those in the front of a light pulse ) in a negative index material are aligned the same way as they are in a positive index material ? anything else would violate basic causality and require parts of the wave to travel with infinite velocity

    他們指出在負折射率材料中調制波前（例如光脈沖前端的波前）的方向，與在正折射率材料中相同；若非如此，就會違反基本因果律，且部份波的前進速度將成為無限大。
  16. The application of resistivity sounding technique to detecting landslide and collapse and the utilization coefficient k technique to determining the type and property of landslide and collapse can result in correct evaluation of geologic hazards, thus rapidly and exactly providing geological basis for preventing and tackling these hazards

    摘要應用電阻率測深法探測滑坡和塌陷，採用反射系數k法區分滑坡和塌陷的類型和性質，正確地評價地質災害，為治理工作提供快速準確的地質依據。
  17. ( 2 ) the properties of displacement measurement based on self - mixing interference are mathematically analyzed. first, how the external phase influences upon the output frequency, intensity, power and line - width is discussed. then, the output signal ' s properties modulated by four waves, including sine wave, square wave, triangular wave and saw tooth wave, is discussed

    （ 2 ）通過數值分析討論了自混合干涉位移測量系統的基本特性，包括外腔相位對輸出光頻、輸出強度、輸出功率、譜線寬度的影響，以及正弦波、方波、三角波、鋸齒波調制反射體位移時輸出信號的特點。
  18. Reflection and refraction of electromagnetic waves at the interface between media with positive and negative refractive indices

    電磁波在正負折射率介質分界面上的折射與反射
  19. It can remarkable enhance the external quantum efficiency by changing the structure of faceplate and decrease the light loss, because if can change the direction of the ray, and avoids the light - wave effect

    這正是本文研究的內容。這種方法通過改變器件的結構，降低光在器件內部全反射的損失，從而提高器件的外量子效率。
  20. The parameterization of clear - sky surface solar net radiation under the conditions of various albedos is obtained through the error correction due to albedo variation

    然後將地表反射率的影響作為誤差項進行訂正，從而得到各種地表反射率條件下的晴天地表太陽凈輻射的計算方法。
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