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emissivity

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emissivity n.發射率，輻射系數。

n. 發射率，輻射系數。 “apparent emissivity“ 中文翻譯：   表觀發射率“cathode emissivity“ 中文翻譯：   陰極發射率“cavity emissivity“ 中文翻譯：   空腔發射能力; 氣體容積輻射; 容積輻射率“color emissivity“ 中文翻譯：   發色性“colour emissivity“ 中文翻譯：   發色性“directional emissivity“ 中文翻譯：   定向發射率“effective emissivity“ 中文翻譯：   等效幅射率; 有效發射率“electron emissivity“ 中文翻譯：   電子發射率; 電子發射系數“electronic emissivity“ 中文翻譯：   電子發射率“emissivity correction“ 中文翻譯：   發射率校正“emissivity factor“ 中文翻譯：   發射率；發射系數; 放射率因數，黑度因數; 輻射系數“emissivity of surface“ 中文翻譯：   表面放射率“emissivity paint“ 中文翻譯：   輻射涂料“flame emissivity“ 中文翻譯：   火焰發射度; 火焰發射率“heat emissivity“ 中文翻譯：   熱發射率“high emissivity“ 中文翻譯：   高發射率“luminous emissivity“ 中文翻譯：   發光率“monochromatic emissivity“ 中文翻譯：   單色發射率; 單色放射率“normal emissivity“ 中文翻譯：   標準發射力“radiant emissivity“ 中文翻譯：   輻射發射率; 輻射系數“skin emissivity“ 中文翻譯：   表面發射率“slin emissivity“ 中文翻譯：   表面發射率“spectral emissivity“ 中文翻譯：   光譜發射率; 頻譜發射率; 頻譜發射因數“water emissivity“ 中文翻譯：   水發射率“emissive type electron microscope“ 中文翻譯：   發射式電子顯微鏡“emissive source“ 中文翻譯：   發射源

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In order to effectively solve the problem of monitoring time - space changes of soil moisture in large - scale regions , according to the conclusion of soil moisture retrievingby passive microwave remote sensing , a methodology of the soil surface emissivity was proposed by model bsm based on amsr - e microwave remote sensing data , proof of the relationship between surface soil moisture and surface emissivity 摘要為了有效解決大尺度區域土壤水分時、空間變化監測問題，在總結了被動微波遙感反演土壤濕度規律的基礎上，基于先進的amsr - e星載被動微波遙感數據，提出了利用雙譜模型計算土壤表面發射率的計算方法。

In order to adapt the request of environment - protecting and military disguise , we can use stable acrylic acid monomer , proper initiator and suitable temperature to create high transparent infrared stealth resin of high solid but low viscosity , high transparency but low emissivity and good performance of becoming the membrane in the infrared wave band 摘要為了適應環保及軍事偽裝的要求，采用穩定的丙烯酸單體，適量的引發劑，適宜的反應溫度，研制出高固體分、低黏度且在紅外波段透明性高、發射率低、成膜性能優良的高透明紅外隱身涂料用樹脂。

( 4 ) the feasibility of applying of brightness temperature approach method and continuous measurement method in practical application are verified . the results of 8 - wavelength thermometer , which are based on the brightness temperature model , verify that continuous measurement method based on brightness temperature is a practical data processing method when the range of target ’ s emissivity is known . the 分別利用亮溫逼近法和基于亮溫模型的連續測量法對基于亮度溫度模型的八波長實測數據進行仿真,利用基于參考模型的連續測量法對固體火箭發動機羽焰溫度實測數據進行仿真,其結果驗證了連續測量法在工程實際中應用的可能性,并進一步驗證了當所給發射率范圍越接近實際物體發射率,計算結果越接近真溫。

In short , through retrieving the parameter such as surface albedo , surface temperature and surface emissivity , all the energy flux such as net radiance flux , soil heat flux and latent heat flux can be computed in sequence further , then latent heat flux which provide energy for et can be computed based on energy balance equation , finally instantaneous et and daily et can be obtained 總之，根據地表能量平衡方程，通過計算對地表反照率、地表溫度、地表比輻射系數、歸一化植被指數等參數進行反演，進一步計算出了地表凈輻射通量，土壤熱通量和潛熱通量，最后獲得了遙感影像成像時的瞬時蒸散及當天的總蒸散量。

The bigger the diameter , the high the heat efficiency , but the weak the temperature increasing ability , length has less effect on the heat efficiency , tilt angle has less effect on the flow field and temperature field while it is larger than 30 degree , vacuum degree and emissivity have great effect on the flow field and temperature field while there is a great temperature difference between the liquid in the tube and the surroundings , the furring has less effect on the heat transfer but should be cleaned up in 3 - 5 years because of poor water quality , the higher the solar flux or the more the temperature difference between the liquid and the surrounding , the more the heat loss and the lower the heat efficiency 分析了各種因素對太陽能真空集熱管流場和溫度場的影響。直徑越大，熱效率越高，但升溫能力弱；長度對熱效率影響不大；傾斜角度大于30后，自然對流已經能夠充分進行，考慮以能夠吸收到最大太陽輻射為主；真空度和發射率對熱效率和溫度場影響很大，尤其是在介質溫度與環境溫度差異比較大時；水垢對傳熱影響較小但由于水質的問題應該被3 5年清洗一次；太陽輻射強度越大，介質溫度與環境溫度差異越大，熱損失越大，效率越低； 4

A comprehensive introduction of energy saving coating glass , especially low emissivity ( low - e ) glass has been given including the development , energy saving characteristic , types and preparation methods . it shows that tin film can be used as dominating film in energy saving coating glass for its good electric conductivity , excellent optical properties and convenient prepared method 本論文介紹了節能鍍膜玻璃特別是低輻射鍍膜玻璃的發展概況、節能特性、原理、低輻射膜的種類及常用的制備方法，并總結出以鈦元素的氮化物tin以其良好的導電性和優良的光學特點、方便的制備方法，能夠成為經濟性節能鍍膜玻璃的主要膜層材料。

( 2 ) a continuous measurement method based on brightness temperature is proposed by processing the measured data of the multiwavelength pyrometer at two different times , the true temperatures and spectral emissivities at two different times can be calculated simultaneously . the experimental results show that this method improves the measurement precision of true temperature and spectral emissivity ( 2 )提出了基于亮度溫度模型的連續測量法,通過處理多波長溫度計兩個不同溫度處的測量數據,可以同時求得兩個不同溫度處被測目標的真溫及光譜發射率,試驗表明:該方法可以提高計算精度。

Taking erectophile type continuous vegetation as a example , authors had done many monte carlo simulations , and established empirical analytic expressions of radiances with component temperature , soil emissivity and leaf area index . empirical analytic expressions were used to construct objective function and genetic algorithm was employed to synchronously retrieve 5 parameters , such as component temperature , soil emissivity and lai , from thermal infrared 2 channels and 2 angles data . many experiments of genetic algorithm inversion from simulated data were conducted , results show that it is very robust to retrieve component temperature using genetic algorithm ; genetic algorithm can cope with uncertainty inversion problem pretty well if full advantage of priori knowledge was taken . comparison between inversion results and ground - truth data has been done . this paper offers a new example to retrieve component temperature from multi - channel , multi - angle thermal infrared data based on the model of directionality of thermal radiance 在熱輻射方向性規律的基礎上，以喜直型連續植被為例，進行了大量的monte carlo模擬，建立了輻射亮度和組分溫度植被葉面積指數及土壤比輻射率之間的經驗函數關系。采用遺傳算法，從熱紅外2個波段2個角度數據中，同時反演混合像元組分溫度土壤比輻射率和葉面積指數等5個參數。通過對模擬的觀測數據進行大量的遺傳算法反演試驗，結果表明，遺傳算法反演組分溫度非常穩健，在寬松的先驗知識條件下，遺傳算法可以解決不確定性反演問題。

Based on the principles of temperature measurement using infrared thermography and the theory of thermal imaging , a uncooled ir fpa thermometry system is designed . in this system , the mathematic model of infrared thermometry calculation is established , and appropriate formulas for error analysis and calculation are obtained . the algorithm calculating the apparent emissivity of target surface is also put forward 本系統建立了非致冷紅外焦平面熱成像系統測溫計算的數學模型；對計算中可能產生的各種誤差進行了分析和計算；對系統成像的非均勻性進行了分析和校正；提出了精確測量發射率的新算法；結合熱成像的原理對紅外熱圖像的特征進行了分析，對紅外熱像進行了新型直方圖均衡和偽彩色增強等處理。

One avhrr image of the yangtze delta at 13 : 00 on 15th apr . , 2003 is used to retrieve the regional parameter such as surface albedo , ndv1 , surface emissivity and surface temperature , which is based on regional trait of the yangtze delta to choose different model . all above will give a methodological support to gain the regional surface parameters , what ' s more , it will afford the parameter support to calculate the regional et too 選取了2003年4月15日13時的avhrr影像，根據長江三角洲區域特點，選擇不同的反演模型，分別對長江三角洲區域地表反照率、歸一化植被指數、地表比輻射系數、地表溫度進行了反演，為區域地表參數的獲取提供了方法支持，也為長江三角洲的區域蒸散量求取提供了參數支持。

The thermal wave nondestructive testing technology based on emissivity of the object , it can find surface and subsurface flaws in the composites of airplane through measuring difference in temperature between flaws and materials by active heating methods and inspection system 摘要紅外熱波無損檢測基于物體的熱輻射特性，利用主動加熱技術，通過相關的檢測系統記錄試件表面缺陷和基體材料由于不同熱特性引起的溫度差異，進而判定飛機復合材料表面及內部的損傷。

In this paper , the characteristics of the electroless nickel plating , the composition and fuction of the plating solution were introduced . at this base the low emissivity material was successfully prepared by the electroless plating method . the sample detected by edxa , sem , aes , ifr 本文在系統介紹了化學鍍鎳工藝的特點、溶液組成及各組份的作用的基礎上，采用化學鍍方法制備低發射率材料，成功地在羰基鐵粉體和陶瓷粉體上實施了化學鍍鎳。

Then the temperature and spectral emissivity of material is calculated through processing the information data . this method has been quickly developed in the latest years because of the capability to get true temperature and emissivity without auxiliary instruments or other additional information 多波長輻射測溫法是在一個儀器中制成多個光譜通道,利用多個光譜的物體輻射亮度測量信息,經過數據處理得到物體的溫度和材料的光譜發射率。

The research on data processing method of multi - spectral thermometry for the measurement of the true temperature and spectral emissivity of high temperature and ultrahigh temperature targets has been supported by the national natural science foundation of china ( no . 60377037 ) 多光譜測溫數據處理方法研究是由國家自然科學基金(編號: 60377037 )資助,應用亮溫逼近法和連續測量法解決高溫及超高溫目標真實溫度及物體的光譜發射率測量問題。

Abstract : in tokamak plasma radiation diagnostics , if the width of a detected plasma chord is comparable with the plasma minor radius , the plasma boundary may influence the line - integrated emissivity considerably and make it a weighted integral of the width - averaged emissivity 文摘:在托卡馬克輻射診斷中，當探測束線的極向寬度與等離子體小半徑可以比較時，等離子體邊界會顯著影響線積分輻射率，使其成為寬度平均輻射率的帶權重的線積分。

To improve the measuring precision of true temperature and spectral emissivity , the dissertation brings forth the new ideas and work as follows : ( 1 ) a brightness temperature approach is proposed and used for the measurement of the true temperature and spectral emissivity 為了提高目標真溫和光譜發射率的測量精度,本課題主要研究工作如下: ( 1 )提出了基于亮度溫度模型的亮溫逼近法的多光譜數據處理方法,以求取目標真溫及光譜發射率。

Theoretical analysis and experimental results showed that the high emissivity coating speeds up the heat - absorption and heat release process , strengthens heat transfer by radiation and heat conduction in the regenerator , improves heat transfer efficiency and the blast temperature 理論分析和實驗結果表明，熱風爐蓄熱體表面高發射率涂層可以提高蓄熱體的蓄熱和放熱能力，強化爐內輻射傳熱和蓄熱體的導熱，從而提高熱風溫度。

This model correctly judges the slagging tendency of a kind of coal - water slurry . measurements are taken of the temperature field , flame emissivity , superheater tube wall temperature , exhaust gas temperature and composition 本文介紹了燃油鍋爐改燒水煤漿后爐內傳熱及其污染物的排放測試結果，包括溫度場、火焰黑度、過熱器管壁溫度、排煙溫度、排煙成分。

Secondly , other parameters such as temperature difference and emissivity of target and sky , molecular absorptive transmittance , instantaneous field of view ( ifov ) , contrast threshold and radiant wavelength are discussed in detail 然后，對目標天空背景溫差、發射率，氣溶膠衰減系數，瞬時視場、對比度探測閾值以及輻射波長等參數作了詳細討論。