輻射能流率 的英文怎麼說
中文拼音 [fúshènéngliúlǜ]
輻射能流率
英文
radiant-energy flow rate-
It has been proven that the differences of magnitude and distribution of tidal currents, wave energy rate, suspended sediment concentration and the stokes number result in a asymmetrical distribution of sandbanks between the north and south. the sandbank surface area and length in the north are lager than those in the south, but its cross section area is less than that in the north
各種動力特徵平面分佈規律研究表明,輻射沙脊群南北沙脊不對稱分佈的格局是潮流沙脊對潮流往復流性質的強弱分佈、潮波能流率大小分佈、含沙量的平面分佈規律及斯托克斯數的大小分佈的動力響應。3. on boiler retrofit, the calculation of fuel burning, the heat calculation of boiler inside structure and convection section, and the design of structure parameter of feed water heat exchanger are made. the flue gas channels " resistance calculation and the boiler strength verifying are also carried out. replacement of water cooling wall improves heat exchanging and decreases loss of heat radiant
對鍋爐本體進行了燃料燃燒計算、爐膛結構熱力計算、對流受熱面結構熱力計算、鍋爐給水加熱器結構參數設計、煙道阻力計算及鍋爐元件強度校核等;改進了水冷壁布置使換熱效果更好,減少輻射換熱損失;改進對流段結構,更充分的利用爐膛出口煙氣余熱,提高熱效率;並且進行了煙氣阻力計算、熱效率計算和能量平衡測試,對改進后的稠油燃料和改進前進行了對比,燃燒狀況和熱效率有明顯改善。Between glass - cover board and endothermic board, honeycomb is placed, which can eliminate heat loss caused by air natural convection and greatly reduce heat loss caused by radiation, and hence a better transfer heat efficiency
而在透明玻璃蓋板和吸熱板之間放置蜂窩結構,基本上能消除吸收表面和蓋板之間的空氣自然對流熱損失,並可大大降低輻射損失,顯著提高集熱器的熱轉換效率。The adoption of patent technology iodine tungsten lamp red heating can incorporate the energies of electricity, light and infrared ray radiation into a whole ; and the water absorption rate can reach the best with the effects of radiation, conduction, convection and function of light energy
專利技術碘鎢燈紅加熱,集電能、光能、紅外線輻射於一體,利用輻射、傳導、對流及光能的作用使水吸熱率達到最佳。The sample with low emitter efficiency has completed as the method of above. this lead to the greatly decrease of the reverse recovery time and the low reverse leakage and forward voltage, especially the excellent temperature character of the leakage. the test date shows that the samples reach the first class of international level
本論文作者通過模擬測試,驗證了課題研究的理論設想,並設計製作了具有低陽極發射效率結構的高壓功率frd ,利用局域鉑摻雜和電子輻照相結合的壽命控制方式,實現器件反向恢復時間的極大減小,並且反向漏電流、軟度因子、正向壓降等關鍵參數也較理想,且具有極佳的漏電溫度特性,達到器件綜合性能的優良折衷,達到國際先進水平。The survey team conducts surveys along pre - designated survey routes in the northeast part of the new territories. it measures ambient gamma dose rates, surface activity concentrations of beta emitters at ground surface and in - situ gamma spectrum of land soil
流動巡測隊會沿新界東北部預先選定的測量路線,在不同位置量度環境伽馬輻射劑量率、地面的貝他放射體的表面活度濃度和原位置土壤的伽馬能譜,以及收集大氣飄塵、放射性碘、擦拭及其他環境樣本。In the radiation aspect, the features o radiation sources in power converters are discussed. the radiation models of dm current and cm current in cables and radiative characteristics of cables and high frequency current loops in the converter are also discussed
在功率變換器輻射emi方面,系統地討論了功率變換器各輻射源的特點,重點分析了共模電流和差模電流在電纜中的輻射模型,功率變換器中電纜與高頻電流迴路的輻射性能。The chip is mainly applied to the portable electronic products with the following features : 2. 7v to 5. 5v input voltage range ; the 1mhz fixed frequency ; - 40 to + 85 operating temperature ; two digital inputs control on / off and select amongst three levels of brightness ; thermal shutdown and under voltage shutdown protection, low 0. 1 a shutdown current ; soft - start limits inrush current
該晶元主要應用於便攜式電子產品,其輸入電壓范圍為2 . 7 5 . 5v ,工作頻率為固定的1mhz ,可大幅度降低輸入紋波和emi輻射,工作溫度范圍為- 40 + 85 ,可使用外部使能控制信號調節led亮度及控制晶元關斷與否,具有過溫保護和輸入欠壓關斷保護功能,完全關斷模式下關斷電流可低至0 . 1 a ,具有軟啟動功能以限制啟動時的浪涌電流。After measuring dark current, photocurrent and response to x pulse of gaas detector before and after 1. 7 mev electronic radiation, the response tune, fall time of trailing edge, full width of half maximum ( fwhm ), sensitivity, carrier life, mobility are researched and contrasted. the result shows that the response speed of detector, time resolution ratio and nonlinear of back edge of output signal have been improved greatly after electronic radiation. though sensitivity of the detector reduces, its measuring range can be widened
為了使探測器的性能得到進一步的提高,我們對其進行了電子輻照改性,並測量了本徵砷化鎵探測器和經過1 . 7mev電子輻照的探測器的暗電流、光電流及對x射線的脈沖響應,並對其響應時間,后沿下降時間,半高寬( fwhm ) ,載流子壽命,靈敏度進行對比,研究,結果顯示經電子輻照后的探測器的性能得到了改善,使響應速度,分辯率進一步提高,並消除了探測器輸出信號后沿的非線性,雖靈敏度有所降低,反而使其測量范圍得以拓寬。Soi hvic ( silicon on insulator high voltage integrated circuit ) is the mainstream and trend of the power integrated circuit ( pic ) due to the improved no latch - up, reduced leakage current, perfect irradiation hardness, and improved insulation
Soi ( silicononinsulator )高壓集成電路具有無閂鎖、漏電流小、抗輻射、隔離性能好等優點,已成為功率集成電路( powerintegratedcircuit )的重要發展方向。It has been proven that, from the propagation process of the tidal waves and wave energy rates, the whole radial sandbanks area is controlled by the progressive tidal wave in the south and the rotational standing tidal wave in the north. these two waves merge at qianggang and induce a large tidal range
通過對潮波波面傳播過程及潮波能流率研究表明,輻射沙脊群海域為南部太平洋前進潮波和北部旋轉潮波所控制,兩潮波系統在?港外海輻聚輻散,形成大潮差區的特點。By calculating the feynman diagram in rtf, we find that when taking into account both the thermal photon emission, absorption and the virtual photon exchange processes, the infrared divergences at zero and finite temperature can be cancelled at the same time. the full quantum calculation results for soft photon radiation coincide completely with the poisson distribution obtained in the semiclassical approximation ( the coupling of the classical current and quantized field )
通過實時溫度場論下的費曼圖計算,我們得到:將實光子的發射、吸收,虛光子的交換過程同時考慮時,零溫場論中出現的和由溫度效應引起的紅外發散都能得到消除;並且完全量子場論下的軟光子輻射幾率與半經典近似下(經典的電流和量子化的電磁場之間的耦合)得到的泊松分佈結果完全一致。Modulating a long foil at high frequency and high voltage transmits significant radio frequency energy, which may cause interference with radio communications
裝備一個長葉片在一個高頻率高電壓的傳輸將引起無線電頻率輻射,可能引起無線電交流沖突。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;傾斜角度大於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於水質的問題應該被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; 4Various studies have been made to attempt to itemize the energy flow of an entire ecosystem, taking into account factors such as incoming radiation, photosynthetic efficiency, etc
為了詳細說明整個生態系統的能量流,考慮了外來輻射、光合效率等等因素,已經進行了很多不同的研究。Numerical analysis of vibration awl sound radiation efficiency from a submerged cylindrical shell has been carried out by using fem methods, bem methods and statistical energy methods
摘要利用有限元、邊界元和統計能量分析方法並結合軟體對圓柱殼體在流場中受激振動及聲輻射效率作了數值計算分析研究。Some key factors in design of kev radioactive ion beam facility are discussed. they are extension of primary ion beam line, target / ion source, selection of target materials, optical calculation of the radioactive ion beam system, measurement of weak radioactive ion beam and overall efficiency of the system
本文介紹了kev放射性核束裝置中幾個關鍵部分的設計和初步實驗結果,包括系統總體概況,初級束流線,靶源系統,靶材料選擇,系統光路,低能放射性弱束流的測量,放射性劑量及輻射防護,系統總體效率評估等。The more details about author ' s work are as follows : 1 ) the mathematical models of solar array wind turbine, diesel, battery, converter and inverter are presented based on quasi - steady state theory. by using the models, the power flow may be determined corresponding to solar radiation and wind velocity data so that the long - term performances of wsdbhps can be predicted
具體說來本文的工作及創新點如下: 1 )建立了光伏陣列、風力發電機組、蓄電池、柴油機和逆變器的穩態數學模型,利用該模型可以計算出對應實時的太陽輻射強度和風速下系統的實時能量分佈,為預測系統功率流以及長期穩態性能打下基礎。分享友人