熱電現象 的英文怎麼說
中文拼音 [rèdiànxiànxiàng]
熱電現象
英文
pyroelectricity-
Under the assumption that the inner surface of stator sleeve and outer surface of rotor are smooth, taking the fact into account that the temperature of stator sleeve of evaporation cooling motor keeps almost the same, horizontal evaporation cooling motor is simplified as a physical model of two coaxial sleeves, with outer sleeve ( the stator ) holds still and keep at constant temperature and inner sleeve ( the rotor ) is rotating and heated
本文通過數值和實驗手段研究了臥式蒸發冷卻電機楔形氣隙中的流體流動、傳熱現象。本文在定子套筒和轉子表面光滑的假設下,針對蒸發冷卻電機定子套筒壁面基本恆溫的特點,將實際蒸發冷卻電機簡化為同軸套筒內筒加熱旋轉、外簡靜止定溫的物理模型。Sicp / al matrix composites, with 5, 15 and 25 % volume fraction of sic particles, were prepared by vacuum hot - pressing sintering processing in this paper. based on mechanics properties, sem observation and energy dispersive x - ray analysis, the interface reaction phenomenon of sicp / al composites made by vacuum hot - pressing sintering, as well as the reinforcement and fracture mechanisms of this composite were analyzed. the dynamic responses of sipc / al composites were studied by a split hopkinson high - speed pressure bar impact system which strain rate was from quasistatic state strain rate ( 3. 3 10 - 3s - 1 ) to dynamic state strain rate ( 5. 2 103 s - 1 )
本研究以武裝直升飛機防護裝甲材料為研究對象,採用真空熱壓粉末冶金燒結工藝制備了含sic顆粒體積分數分別為5 、 15和25的sic顆粒增強鋁基復合材料,結合其力學性能、掃描電鏡和界面微區能譜分析結果,分析了sic _ p al復合材料的真空燒結過程中的界面現象,以及材料增強和斷裂機理,並利用hopkinson高速壓桿沖擊實驗系統對其從靜態到動態(應變率為3 . 3 10 ~ ( - 3 ) s ~ ( - 1 ) 5 . 2 10 ~ 3s ~ ( - 1 ) )的壓縮破壞響應進行了研究,分析了不同體積分數sic _ p al復合材料高應變率壓縮載荷下,材料的變形和微觀損傷機理,以及利用高速沖擊空氣炮測定了改復合材料制備剃度復合板的穿透性能。Because the lattice vibration is weak at very low temperature, the contributions of electrics and other low energy excitations become dominant parts of specific heat. therefore, we can study the micromechanism of many physical phenomena from specific heat measurement
在很低的溫度下,由於晶格振動變得很弱,電子和低能激發貢獻越來越突出,這對我們通過低溫比熱研究很多現象的微觀機制十分有利。In order to examine the south motorcycle engine preignition phenomenon, using the rich burning information of the massive ions which are produced when the air cylinder is burnt, through analyzing the wave form difference between lighting a fire normally and firing early, it can be determined whether preignition occurs or not
為了檢測南方摩托車發動機早燃現象,利用其氣缸內燃燒時產生大量的離子電流信號所包含的豐富燃燒信息,對其火花塞正常點火和熾熱點火離子電流顯示的波形進行研究分析,從而確定是否發生早燃。This paper have reviewed detailed the thermoelectricity, the history of thermoelectric materials and the current situation of mg2si based thermoelectric material
本文首先對熱電現象、熱電材料的發展歷史以及mg _ 2si基熱電材料的研究進展作了比較詳細的綜述。Ash deposition on boiler heat exchanger surface is a common phenomenon in fossile fuel powered power plant. this paper focuses on the research building a suitable model of soot deposition status of heat exchanger surface, and constructs a online monitoring system based on the built models. this will provide a reliable foundation to the optimal scheduling of the soot blowers
本文針對鍋爐受熱麵灰污染危害嚴重的普遍現象,以北侖電廠600mw1 #鍋爐作為研究對象,進行了有關電站鍋爐受熱麵灰污染在線監測的研究工作,為吹灰優化經濟運行提供了可靠的依據。Kiln guiding - rail bricks, supporting suspension bricks and ultra - thin extruded batts are recently developed for the phenomenon of pollution and pulverization caused by using insulation bricks or high - temperature refractory wool in the kilns. they are made from cordierite and mullite with a high strength. they can cover the kiln wall structure made of refractory fiber, greatly reduce pollution and pulverization, remarkably save the energy, easy to be constructed on worksite, and the aspect is beautiful and novel. they are ideal material for large - scale shuttle - kiln or computerized puadrate kiln
窯體道軌磚及支撐吊磚和超薄中空板是針對目前窯爐採用傳統耐火材料在使用過程中由於組多原因造成落臟或粉化現象而開發生產;它是堇青石-莫來石材料製造而成,強度大,熱穩定性佳、覆蓋耐火纖維製品組成窯爐墻體結構,它能大大減輕落臟與粉化現象,節能效果十分明顯、施工方便、整體美觀新超是高級大型梭式或電腦方窯等窯爐的理想材料。Theoretical analysis indicates, the two technology helps reduce the concentration of current, lower the peak junction - temperature, and effectively avoid the appearance of devices " breakdown caused by heat and current
理論分析表明:上述兩種技術,有利於減小電流集中現象,降低器件峰值結溫,避免熱擊穿和二次擊穿的發生。Through the research of crosslinking of matrix resin, heating treatment of composite and mixing of different polymer, we draw some conclusions : 1 、 percolation theory can explain the phenomenon of the jump of resistance when the content of cb reach a critical volume ; 2 、 based on ohm conduct theory, abounded to the percolation the wbibull statistical theory and other theory, an adapted theory was obtained to explain the jump of resistance and the other phenomenon ; 3 、 the ntc phenomenon was eliminated by crosslinking the matrix of conductive composite, at the same time the stability of composite was improved
通過對基體樹脂的交聯、復合材料的熱處理、聚合物共混物的研究得出了如下的結論: 1 、滲濾理論能夠很好的解釋導電粒子含量達到某一值時電導率劇增的問題; 2 、在歐姆導電模型的基礎上,綜合應用了weibull統計理論模型,結合原來的體積膨脹等理論,成功的解釋了ptc復合材料在基體材料熔點附近的跳變問題、 ntc現象以及熱循環穩定性等問題; 3 、有機ptc導電復合材料經硅烷交聯以後能夠消除ntc現象,改善了導電復合材料的穩定性能。Scientists too are interested in it because of its astonishing physical qualities, for tourmalines can become electrically charged when they are heated and then allowed to cool
加熱隨后逐漸冷卻,在溫度變化下,將會在兩極產生電荷,一邊為正極而另一邊為負極。這現象被稱之為The fact that tatb crystal in expands along c axle and could not be recovered in a heating circulation were explained from the distance between atoms as well as from miilliken population analysis. we also have explained that p - hmx crystal is easy to initiate decompose and detonate but tatb is very stable through the research of electrostatic potential map of electric charge
分析原子間距和m lliken集居,解釋了tatb晶體沿c軸膨脹以及受熱循環后長大的各向異性和不可復原性等實驗現象;還通過對點電荷靜電勢的研究,闡明了- hmx晶體易於在分子間相鄰硝基處引發分解和起爆,而tatb則很穩定等實驗事實。It is proposed that the higher dose condition creates more hot carriers but the lower sensitivity to hot carrier effect. therefore, the optimum dose for reliability is determined from the trade - off between the above two aspects. finally, a simple model is proposed and discussed
本文還深入研究了sde區摻雜濃度對器件熱載流子可靠性的影響,指出濃度的提高雖然會產生更多的熱載流子,但由於其對熱載流子損傷的敏感度降低,因此將存在一種折衷,最後通過一個簡單的寄生電阻模型,對摻雜濃度提高后,器件對熱載流子損傷敏感度降低的現象做出了很好的解釋。Instant material culture and electronic entertainment are causing the quick disappearance of the arts, literature and philosophy, like the rain forest but the behaviours and conditions which are borne out of the emptiness of the human spirit are getting worse by the day
速食式的物質文化與電子化的休閑方式,讓藝術文學和哲學走向「熱帶雨林化」 ,迅速消失。但是人們因心靈空虛而出現的行為與現象,卻日漸嚴重, 「世紀末」成了浮淺的借口。The thermoelectric phenomena, the history and the recent development progress of thermoelectric materials were reviewed in detailed at first
本文首先對熱電現象、熱電材料的發展歷史、熱電材料的研究進展作了比較詳細的綜述。Electricity heating technology can achieve automatic control and utilize energy resources effective. it can supply the thermal that system needs to the comsumers, and has no waste
電加熱技術可以實現自動控制,使能源得到合理有效的利用,可以按照系統所需要的熱量提供給用戶,很大程度上解決了浪費的現象。With the increase of silane content, the content of gelatin increased continuously and ntc phenomenon disappeared gradually. when the silane content reach a certain volume, the ntc phenomenon was eliminated completely, at one time, the content of gelatin keep stable. 4 、 heating treatment can improve ptc characteristic of composite and increase ptc intensity. when the temperature and time of
隨著硅烷含量的增加凝膠含量不斷的增加, ntc現象逐漸消失,達到一定值時ntc現象消失,凝膠含量不再提高; 4 、熱處理可以改善導電復合材料的ptc特性,提高它的ptc強度,熱處理溫度為120 ,熱處理時間為30h時效果最為明顯。Phenomenon whereby heat is liberated or absorbed at a junction when current passes from one metal to another
當電流從一種金屬流入另一種金屬時,在結點處所發生的釋放熱或吸收熱的現象。In the experiment we also observed negative differential resistance characteristics of gesi hbts with heavily doped base at high collector - emitter voltage and high current. a new interpretation to this phenomenon was given. this
在實驗中我們還觀察到,在高vce和大電流下,重摻雜基區gesihbt出現負阻現象,我們對這一現象進行了新的解釋,認為這是由熱電負反饋導致的。In the way based the scientific and tecdrical talks on i presided at and panicipated in, the graduation theis included a p1entful thets in recent years wtll be divided into three parts for depiction conxteniently and clearly, according to the content as fo1lowsf ( l ) the study of shock compression properties with the drixtiir - liquid co and n, experimentally ( 2 ) the study of the phenomenon of excess heat produced by deuteriurn atoms entering into the lattice of titaluxn experimentally ( 3 ) the calcujation for the electronic structure and energy of hydrogen atoms cluster ffi. the mainstream in the first part of the paper is to exposure some experimental tecndques in high pressure and high temperatur shock compression physics, including by using a cryo - target cooled down circulating steaxned n, to condense the well - proportioned mixed liquid sample from pure gas co and n = with equal molar voiurne
根據近幾年所承擔和參加的科研任務,將研究成果總結寫成的論文按以下三個部分敘述: ( 1 )液體co和n _ 2混合物沖擊壓縮特性的實驗研究(由國防科技重點實驗室基金項目96js75 . 2 . 1 . jw1902資助) ( 2 )重氫原子進入鈦晶格中引起過熱現象的實驗研究(由國家自然科學基金10145002資助) ( 3 )氫原子團簇h _ 9的電子結構與能量計算第一部分以高溫高壓沖擊波物理實驗為主,採用自行研製的低溫循環汽冷靶冷凝制樣技術由高純co和n _ 2氣體獲取等摩爾體積均勻混合的液體沖擊初態樣品。Aiming at the status that the use ratio and skill of the sootblowers in plant at home are poor, the research on online monitoring of ash deposit and slag and sootblowing optimization is carried out. the research takes no. 1 boiler of the beilun power plant in ningbo as an example, which load is 600 mw electricity
針對我國電站鍋爐吹灰器利用率和利用水平低的現象,以電站鍋爐日常吹灰運行為研究對象,理論研究為主,研究受熱麵灰污監測模型和吹灰器優化運行,探索電站鍋爐日常吹灰優化運行的策略方案。分享友人