溫度下減率 的英文怎麼說
中文拼音 [wēndùxiàjiǎnlǜ]
溫度下減率
英文
temperature la e rate-
Experimental studies on s1a - 02 gas turbine with water injection into compressor interstage / inlet as well as that on turbocharger self - loop test rig with inlet water injection are introduced. test results are in good accordance with simulation results, wet compression can lower compression work and increase engine power output so engine performance is enhanced, if engine power output is not changed, efficiencies of compressor and this engine become higher and turbine inlet temperature and fuel consumption become lower and if keeping t4 the same as that before wet compression is used, efficiencies become furthermore higher and engine power output increases greatly
實驗結果和計算結果同樣表明:濕壓縮減少了壓氣機所消耗的壓縮功,增加了燃氣輪機的輸出功率,提高了燃氣輪機性能,如果保持發動機輸出功率恆定,濕壓縮可以提高壓氣機和整個燃氣輪機機組的效率,與此同時,渦輪進口溫度t _ 3 ~ *和燃油消耗率下降;如果保持渦輪排氣溫度t _ 4 ~ *恆定,壓氣機和燃氣輪機機組效率進一步提高,燃氣輪機輸出功率增加。Temperature lapse rate
溫度下減率The results indicate that ( a ) before heat treatment, with the increasing of substrate temperatures, content of lower valency ( tij + ) decreases, the stoichiometric proportion of o / ti in all samples is about 2 ; the films have amorphous incompact columnar fiber structure, and with the increasing of substrate temperature, the size of columnar fiber increases ; the films have good hyalescence in visible range and great absorbability at the wavelength of 350nm ; optical constants of the films are calculated from the transmittance spectrums in visible range by mathematical analysis of the orders of interference, the results show that the refractive ind
研究結果表明, ( a )熱處理前,隨著基片溫度的增加,薄膜中的低價氧化鈦含量逐漸減少,化學計量比趨于o ti = 2 ;薄膜具有非晶態不緻密的柱狀纖維結構,柱狀纖維的尺寸隨基片溫度的升高而增加;薄膜在可見光范圍內透明,在波長為35onzn時嚴重吸收,利用干涉級次法分析了薄膜的光學常數,結果表明,薄膜的折射率隨基片溫度的升高而增加,根據計算結果得到了tioz薄膜在不同基片溫度下的折射率色散曲線。It ' s the first time to explore the combustion characteristics of lpg / diesel mixing fuel engine, and find that, with the change of load and rotation, the changing trend of the ignition delay period of e10 mixing fuel is almost as identical as that of the diesel, but that of e30 mixing fuel is very different. comparing with diesel, the combustion of e10 is improved slightly, but that of e30 greatly changes ; the maximum eruptive pressure decreases ; the maximum pressure increase rate decreases ; the highest releasing heat rate increases ; the highest combustion temperature falls ; the ignition delay period extends
結果表明: e10混合燃料與柴油的著火滯燃期隨負荷和轉速的變化趨勢基本一致; e30混合燃料與柴油則有所不同; eio混合燃料發動機的燃燒與純柴油相比,略有改善; e30混合燃料的燃燒特性發生明顯的變化,最高爆發壓力下降,最大壓力升高率減小,最大燃燒放熱率增大,最高燃燒溫度下降,滯燃期延長。In this paper, high heat penetration into a moving particulate bed is described mathematically with a comprehensive heat and mass transfer model. the distribution of gas velocity and pressure, the temperature field of gas and solid in the moving particulate bed are examined for different conditions. the results show that thermal penetration into the moving packed - bed particles by fluid flow in porous media is high only in the position near the gas entrance. the thermal penetration thickness tends to increase with the fluid flow velocity and decrease with the particle moving velocity. in the region of thermal penetration, the porosity of solid bed has significant effect on gas field and pressure loss. it is feasible to reduce the gas pressure loss by a larger width / height packed bed in design and operation. the correspondence between thermal infection depth and particle bed height would be helpful to keep high oapacity of reactor and reduce the cost of operation
針對移動顆粒床中物料層內的高溫氣體滲流傳熱現象,考慮滲流與傳熱的相互作用,採用局部非熱平衡假設建立了多孔介質滲流傳熱物理數學模型並進行了數值計算.研究了不同情況下床內填充多孔介質中的流速、氣固溫度和床層壓力損失.計算結果表明,高溫熱氣對移動床顆粒料層的熱滲透主要發生在滲流入口端區域,增大入口滲流速度以及減小床層物料下移速度將導致物料溫度沿床高慢速下降,熱滲透深度擴大,熱滲透作用區域內的物料溫度水平提高.在熱滲透作用區域,孔隙率對流場和壓力損失有很大的影響.研究結果對于移動顆粒床反應器的設計與運行具有一定的參考作用It is found that the pyroelectric coefficient and susceptibility increase with the decrease of the magnitude of the long - range interaction and the interfacial coupling when the temperature is lower than the phase transition temperature
我們發現,在相變溫度以下,隨著雙層薄膜的界面耦合的減弱,鐵電雙層薄膜的熱電系數和介電極化率增加。Temperature decreases with elevation through the troposphere at a rate, normally, of about 0. 6 for 100 m
在對流層,氣溫隨高度減小,其遞減率通常為每上升100米下降0 . 6左右。We measured the samples " electrical properties ( square resistance, square carrier concentration, carrier mobility and hall coefficient ) at room temperature by hall measurement. the experimental results revealed that all the samples are p - type, with increasing the annealing temperature, the carrier mobility increased and the square carrier concentration decreased. these changes in electrical properties are explained by a decrease in the number of mn acceptors because of the forming of mnas phase and the resuming of lattice defects during annealing
所有樣品均為p型導電類型;發現在650到850溫度范圍內,隨著退火溫度的升高,樣品的方塊載流子濃度呈下降趨勢,而載流子遷移率呈上升趨勢;這是由於在退火過程中,隨著退火溫度的升高,有更多的mn參與mnas相的形成,使得以替位受主形式存在的mn減少,並且晶格缺陷得到恢復所致。8 - 1. 2g / min, and collection efficiency achieve 8 - 10 % under these parameters. through the study on the dispersion process of the nanoparticle tio2 in water, the author finds out that whisk time, dispersant types, dispersant concentration, dispersing time, ph value, temperature and electrolyte concentration have significant influence on dispersing effects. through contrastive and orthogonal experiments, the author obtains that composite dispersants have better results than single dispersants
研究表明,液料等離子噴塗制備的納米tio :顆粒平均粒徑為10 ~ 50nln ,其晶型以銳欽礦為主,且隨著電弧功率的增大,銳欽礦含量減少;在本次實驗工藝參數下,收集速率為0 . 8一1 . 29 / min ,收集效率為8一10 % o通過對納米ti02顆粒在水介質中的分散性研究,發現機械攪拌時間、分散劑種類及濃度、分散時間、 ph值、溶液溫度和電解質濃度對納米tio :顆粒的分散穩定性有很大的影響。We think increase of the internal resistance of battery is the main problem to the recycle life deteriorating at high rate, besides the influence of the materials. decomposition occurred on positive and negative electrode at high rate current and the interspaces increased. the restrains of swelling and the increase of an oxygen overvoltage can improve the performance of recycle life
對于電池性能衰減的原因,認為除了所使用的材料是影響電池性能的重要因素之外,在溫度和大電流作用下,電池的正負極材料發生裂解,極片內空隙增大,電池內阻性能惡化是引起電池高倍率循環性能惡化的關鍵;通過抑制正極析氧和膨脹,並降低負極合金材料的粉化過程,將有望緩解電池內阻特性的惡化,從而提高電池高倍率充放電循環性能。The dehydration time is square of the droplets diameter so the small diameters of the droplets can cut down the drying time then reduce the height of the drying chamber. to the combined spin - flow pressure spray drying, the diameters of droplets are small and the dehydration rate is higher so keeping the qualities of the dried products we can increase the speed of the inlet wind and reduce the temperature of the outlet wind thus can improve the evaporation intensity of the drying chamber and the average energy utilization of the drying equipment
因霧滴的脫水時間與其直徑的平方成正比,減小液滴直徑有利於縮短乾燥脫水時間,可有效降低乾燥塔的高度;由於旋流式組合壓力噴嘴霧化滴徑的減小,脫水速度明顯加快,在不影響乾燥物料性質的前提下,適當提高進風溫度,同時有效地降低排氣溫度,有利於提高幹燥塔的蒸發強度,也有利於提高幹燥設備的平均能源利用率。At the fixed temperature level, both the permeability and hydraulic conductivity of sandstone decrease with the increasing effective stress, following the law of negative exponent. at the fixed effective stress level, however, the function between hydraulic conductivity and temperature is not a monotone one
在溫度一定的條件下,砂巖的滲透率和水力傳導系數均隨有效應力的增加而呈負指數規律減小,但在有效應力一定的條件下,水力傳導系數與溫度之間的關系函數並非單調函數。While the speed is very large, the fuel - air mixing behind the airstream is decreased and the span that the fuel flow in the second combustor is reduced, so the combustion efficiency is decreased, h ) if the fuel streams impinge with the airstreams directly at the air - inlet exit, it make against increasing the combustion efficiency, i ) increasing air - to - fuel ratio within proper range can increase the combustion efficiency
增加燃氣噴射速度有利於增強迴流區強度,頭部燃燒溫度上升,但速度太大則會減弱燃氣同空氣在進氣道下游的摻混燃燒,減少燃氣在室內停留時間,燃燒效率降低; 8燃氣射流與空氣流在進氣道出口直接撞擊不利於燃燒效率的提高; 9在適當范圍內增大空燃比能顯著提高燃燒效率。The highest sintering temperature got higher and the speed of temperature became faster, with the fining of the powder particle size or the increase of the microwave source ' s power or the decrease of the green compact ' s volume. the sintering time became shorter, with the fining of the powder particle size or the decrease of the microwave source ' s power or the increase of the green compact ' s volume
隨著功率的提高,燒結的最高溫度上升、燒結時間延長、升溫速率略有提高;隨著粒徑的減小,燒結的最高溫度上升、燒結時間縮短、升溫速率明顯提高;隨著初坯體積增大,則燒結的最高溫度下降、燒結時間縮短、升溫速率降低;初坯的密度對燒結過程影響不大。Secondly, the effect of transverse deforming on the property of the wedge pressing was studied. the results showed that : the wedge pressing stock with the transverse deforming amount of 10 % acquired the best performance. the highest density got the biggest rate of slope while with the amount of 30 % the curve was more some special structure and performance as following : the large porosities was crushed into small or linear ones with the high - direction deformation amount of 20 % ; as the increasing of the high - direction deforming, the particles got a further deforming, the porosities got a further crushing, the small porosities were mergered by the large ones and the former then disappeared ; when the amound reached 60 %, the quantity of the porosities would obviously decrease which made the materials compact, the microstructure more uniform and the density and hardness curves more horizontal, the relative desity could reach 99. 7 %, the tensile strength b of the as - compacted samples reached 408mpa with the yield strength s teached 289mpa and the elongation percentage reached 13. 6 %. in addition, the microstructure of the wedge pressing stock under the pressing temperectureof 450 was uniform, the porosities and the boundries of the grains basically disappeared and the conjunction between particles was great
採用雙向楔形壓制,大尺寸噴射沉積5a06鋁合金楔壓坯的組織和性能變化具有如下特點:當高向變形量為20 %時,大的孔洞變形破碎為小的孔洞,或呈線狀孔;隨著高向變形量的增加,顆粒進一步變形,孔洞進一步破碎,大孔「吞併」小孔,小孔塌陷並逐步消失;當高向變形量達到60 %時,孔洞量大為減少,材料基本緻密,組織趨于均勻,楔壓坯料的密度、硬度變化曲線接近水平線,坯料的相對密度達99 . 7 % ,抗拉強度_ b = 408mpa ,屈服強度_ ( 0 . 2 ) = 289mpa ,延伸率= 13 . 6 % ;對比其它的壓制溫度,在450楔形壓制的坯料組織均勻,孔洞及顆粒邊界基本消失,顆粒之間冶金結合良好。The magnitude of the conductivity maximum increases and shifts to lower temperature with increasing sr content. in this paper, the electrical conductivity reaches maximum value at x = 0. 4. below the temperature corresponding to the maximum value, the electrical conductivity is found to follow the relationship for the small polaron hopping mechanism, charge compensation of oxygen vacancy dominates electrical conduction at high temperature, and oxygen vacancy acts as traps to catch carriers, resulting in the decrease of carriers concentration and mobility
通過電學和熱學性能測試結果表明,電導率隨著sr含量的增加以及溫度的變化都出現了極大值,在本論文中,在sr含量為0 . 4時電導率值最大,電導率最大值對應的溫度隨著sr含量的增加而降低,這是由於在低溫下以小極化子導電機理為主,在高溫階段則是氧空位的電荷補償占據主導作用,氧空位使得載流子的濃度和可動性減弱,從而導致電導率降低。The forming - nucleus drive power could form numerous little crystal nucleus under natural melting temperature. the formation of tic particles in the melt could be divided into two phases which was forming - nucleus and growth. the forming mechanism of tic was : melting ti first surrounded c, then ti melting in the alloy and c formed a complicated reaction mesosphere on the carbon surface
根據熱力學及動力學分析,認為在碳顆粒界面處tic的形核率很高,形核驅動力足以在正常的熔煉溫度下形成眾多的小晶核;熔體中tic顆粒的合成可分為形核與長大兩個階段,其形核機制為:首先活性ti原子包圍c ,溶入合金中的ti與c在碳表面形成一復雜反應中間層,隨著反應進行, ti和c顆粒不斷減少,生成的tic不斷彌散分佈於熔體中;其長大過程伴隨著tic顆粒的相互堆砌、聚集和形態規則化。The relationship between sputtering conditions and the depositional speed shows : with working pressure 1. 2 pa, sputtering power 180w, the depositional speed of tio2 thin film is 40nm / h, and increases with the increasing of sputtering power. it can be also founded that the depositional speed is nearly proportional to the working pressure : within the range of 0. 3pa to 1. 6pa, the depositional speed increases linearly with the increase of ar pressure. with the enhancement of the substrate ' s temperature of sputtering or annealing, the resulted thin films show a tendency of decreasing in thickness, and increasing in refractivity
本實驗是採用磁控濺射方法,在不同的溫度下制備了tio _ 2薄膜,並對薄膜進行了不同溫度和時間的退火處理,通過原子力顯微鏡( afm ) 、 x射線衍射( xrd ) 、掃描電鏡( sem )等檢測手段對薄膜的表面形貌和組成結構進行了分析,結果如下: ( 1 )濺射工藝條件與薄膜沉積速度的關系表明:採用1 . 2pa工作氣壓, 180w的射頻功率tio _ 2薄膜的沉積速率為40nm h ,並隨射頻功率的增加而提高,呈近似的線性關系,在0 . 3pa 1 . 6pa氣壓范圍中,氬氣壓強升高沉積速率迅速增加,濺射溫度提高和退火處理能使薄膜的厚度減小和折射率提高。And temperature is also an important factor. with the improve of temperature, ttq decreases and energy consumption decreases, while in the same time, the power of the machine increases, so we should choose lower temperature ( 170 ) to lessen the energy consumption
溫度亦為影響加工的重要因素,溫度升高,復合體系的ttq下降,能耗降低,但同時也使設備的功率增加,本體系在170 - 240的條件下,應盡量選擇較低的加工溫度( 170 )減少能耗。As far as daily surface air mean temperature, rmsie is below 0. 5ctc. as for daily surfac e air max and min temperature, the rmsie are respectively lower than 0. 74 and 0. 58. ( 4 ) the model a takes into account the fact that temperature lapse rate changes according to such factors as topography, latitude, longitude and moisture transfer, etc. the effect of spatial interpolation that uses it is not noticeably ameliorated by contrast with using the model a. there remains a need for further study
其中,改進方案a與其它方法相比,效果較好,其me均在0 . 03以下,對于地面日平均氣溫場, rmsie均在0 . 50以下,對于表面大氣日最高溫度場, rmsie均在0 . 74以下,對于地面日最低氣溫場, rmsie均在0 . 58以下;在方案a的基礎上,考慮溫度直減率隨經、緯度和地形以及水汽輸送等因素變化的分區插值方案,與方案a比較,插值效果沒有明顯改善,因此還需要進一步的研究。分享友人