高壓相變 的英文怎麼說
中文拼音 [gāoyāxiāngbiàn]
高壓相變
英文
phase transition under high pressure-
In this thesis, the author analyses the deficiency in detecting and controlling function of the computer detecting and controlling system utilized in present transforming station. the strategy of design of software on operation and direction of 5 00kv transformer station is presented. it points out that we can deduce the mathematic analytical formula using the current, voltage and power of two terminals of transmission line as input. on this basis, we do realtime calculation of 500kv transmission line ' s parameter. we can also deduce the linear analytical formula of three - winding autotransformer ' s resistence using its current, voltage and power as input. the corresponding software is programmed on this basis
論文提出以輸電線路本端和對端電流、電壓、功率作為輸入量,導出了超高壓長線的波阻抗和傳播常數的數學解析式,在此基礎上進行了500kv輸電線路實時參數計算;提出以三繞組自耦變壓器的電流、電壓、功率為輸入量,導出了自耦變壓器繞組的電阻、電抗的線性解析式並進而對變壓器的實時參數進行計算;在此基礎上編制了相應的軟體。( 3 ) on interannual timescale, the changes in the sh ferrel cell lead to the anti - phase variation of the subtropical high and the circumpolar low, i. e., the antarctic oscillation ( aao )
( 3 )南半球ferrel環流圈的異常使繞極低壓帶和副熱帶高壓帶的強度出現了反位相的變化特徵,即南極濤動。The authors consider that high - pressure epidote - blueschist, high - pressure eclogite, and ultrahigh - pressure eclogite formed at the same time, but at different depths
認為高壓綠簾藍片巖相、高壓榴輝巖相、超高壓榴輝巖相是在同一俯沖帶內不同深度發生的同期變質作用產物。Considering that no phase transition of enstatite with perovslite structure were found during these static high pressure experiments, the consistence of the bulk modulus also supports that the high pressure phase of perovskite structure of enstatite is stability between 50 - 140gpa
考慮到靜高壓下的數據是在實驗中未發現頑火輝石高壓相有相變的情況下得到的。因此,動高壓與靜高壓實驗數據的一致性支持了在80 ? 140gpa壓力內預火輝石的高壓相保持穩定的觀點。By adding definite chirality reagent the lcd reflection wavelength is changed and the voltage is increased. by adding a bit of active reagent such as polyoxyethylene sorbitan monooleate, polyoxyethylene sorbitan trioleate, glyceryl momostearate and so on, the lcd response velocity is remarkably improved. the lcd response velocity is increased about 200 times
通過加入一定量的手性劑改變了液晶顯示器反射波長、提高了相變電壓等性質;分別加入少量活性劑吐溫80 、吐溫85 、單硬脂酸甘油酯顯著提高了液晶顯示器的響應速度,其響應速度提高了200倍左右。By analyzing and predicting the microclimate in greenhouse in typical weathers, the conclusions are that high temperature with low humidity weather and high temperature with high humidity appear one after the other. the measures are proposed as the followings : to the former, it should be taken to decrease the temperature with soppy shade - fan or spray inside or outside ; to the latter, it should be taken to enlarge the ventilation area, to fit spray apparatus at the top of roof outside, to adopt havelock outside instead inside, to coat the roof white, etc
通過對典型天氣下溫室小氣候變化規律分析和預測,其結論是:從7月中旬到8月中下旬,室內相繼出現高溫低溫和高溫高濕天氣,建議分別採取的適宜措施是:濕簾-風機降溫、高壓噴霧降溫、屋頂噴淋降溫和增大屋頂通風窗的通風面積、安裝屋頂噴淋(霧)設備、改溫室內遮陽為外遮陽、塗白溫室屋頂等。The products is of high water hydrophobe device usedin suitable and has the characteristics of aging resistance, resistance, tracking resistance, and corrosive resistance. it can withstand high bent load, strong impact force fn12 - 12 series indoor use high voltage load switch fn12 - 12 and fn12 - 12r is of three phases indoor use ac high voltage load switch for breaking and making the circuit of 50hz, 12kv system under rated loading
Fn12 - 12和fn12 - 12r組合電器是額定電壓12kv額定頻率50hz的三相高壓開關設備用於分合負荷電流閉環電流空載變壓器和電纜充電電流關合短路電流配裝接地開關的負荷開關,可以承受短路電流Further more, the coherence between circulation and olr are calculated and analyzed. the results show that there is positive correlation between australian high and the precipitation of middle and low reaches of yangtze rivers, and negative correlation between okhotsk and the precipitation of middle and low reaches of yangtze rivers
由相關分析得出,春季鄂霍次克海區與澳大利亞高壓區和長江中下游地區夏季olr值分別表現出較好的正相關和負相關,表明這兩個地區位勢高度場的變化與夏季長江中下游地區降水多少有著密切的關系。The activity of cold air and interannual variation of low level jet are important cause of interannual variation of the rainfall in april. interannual variation of subtropic high is the main cause of interannual variation of the rainfall in may over north china. there is significant negative correlation between interdecadal variation of the rainfall in april and that of sst in the areas of equatorial indian ocean and tropic middle - east pacifi
華北4月降水與熱帶中東太平洋、赤道印度洋海溫年代際變化呈明顯的負相關:華北5月降水與熱帶中東太平洋、赤道印度洋海溫年代際變化存在明顯的正相關:熱帶海溫的年代際異常引起的副熱帶高壓的年代際異常可能是影響華北4 、 5月降水異常的重要原因。3 in the years of cold spring, the inner mongolia high and the aliushen low are strengthened with the low index of the east asia trough and the negative anomaly center of temperature over northeast china from surface to tropopause while the contrary conditions occur in the years of warm spring
3 、東北地區出現春季低溫的主要環流特徵是:內蒙古高壓,阿留申低壓的強度加強;阿流申低壓指數以及東亞大槽強度指數減弱,東北地區從地面到對流層頂處在溫度負距平中心內,東北地區春季高溫時則出現與上面相反的變化形式。The three - phase distribution flow method on combining the back / forward sweep algorithm and circuit calculation is studied. as a result, the transform model from the apparent power of low voltage side to the current of high voltage side is built
研究了電路計算與配電網潮流計算的前推回代法相結合的(基於電路分析的)三相潮流計算方法,在該演算法的基礎上建立了配變低壓側的功率到高壓側的電流的轉換模型。As a result, we find that in winter when the kuroshio is cooler than the normal, at following summer, the continental cyclone deepen and the east asia monsoon strengthen, that the mid - latitude blocking high weaken and zonal circulation develop, the east asia teleconnection of " - + - " is stired up, so that subtropical high weaken and diminish, and tend to east north, tropical monsoon trough strengthen and mei - yu front weaken, and tend to north, meanwhile south asia high weaken and diminish, and tend to eastvnorth, is easy to form eastern region type
結果發現當黑潮海溫冷異常時,後期夏季大陸熱低壓加深,東亞夏季風偏強。中緯度阻塞高壓減弱,東亞地區緯向環流發展,在東亞-西太平洋地區激發「 - + - 」的東亞遙相關型,從而西太平洋副高強度偏弱,面積偏小,位置偏東、偏北,東亞梅雨鋒也偏弱,季風槽則變強,位置偏北。同時南亞高壓偏弱,位置偏北、偏東,易形成東部型。During the high - voltage device design, the thick epitaxial layer ldmos which is compatible with current technology was researched. this device used piecewise vld and multiple region structure f reduce field layer. the using of the f reduce field layer effectively reduce the surface electric field of the device, shorten the length of its drift region, enlarge the choice of range of the ion implant dose of the p layer, and effectively restrain the disadvantageously affection on the breakdown voltage of the interface charge qss
在高壓器件研究中對與現有工藝相兼容厚外延ldmos進行研究,該結構採用分段變摻雜多區p ~ -降場層,有效降低器件的表面電場,縮短器件的漂移區長度,增大p ~ -降場層注入劑量的選擇范圍,並有效地抑制界面電荷qss對器件耐壓的不利影響。To resolve the situation that the sensitivity of present ground fault protection schemes is low for the large - sized hydro - generators, a kind of protection scheme based on the fault component of third - harmonic voltage and two kinds of protection scheme based on the fault component of zero - sequence voltage at the terminals and neutral are developed, and they can obtain higher sensitivity and reliability and provide 100 % protection for the stator windings. the influence of noise on the stator ground fault protection based on the local modulus maximum of wavelet transform is analyzed
針對目前大型水輪發電機定子繞組單相接地保護靈敏度偏低的問題,通過分析單相接地故障后機端和中性點零序電壓的變化特點,提出了一種基於機端和中性點三次諧波電壓故障分量和兩種基於機端和中性點零序電壓故障分量的高靈敏度、高可靠性保護方案,並實現定子繞組的100 %保護。Conventional hard switching technology has several flaws below : on and off loss, inductive off, capacitive on and diode recover problems. comparing with it, the loss of on and off decreases markedly, as the switches are on and off in zero voltage or zero current cases. and also the size of converter becomes smaller because of the higher of switching frequency
傳統硬開關技術由於存在開通關斷損耗大、感性關斷、容性開通、二極體反向恢復等問題,與之相比,軟開關技術在零電壓或零電流條件下導通,開關損耗明顯降低,加上開關頻率的提高使得變換器的體積得以減小,這也是軟開關技術受到青睞的原因。In this paper, research and manufacture work on high efficiency high power density high - voltage high - power dc power is undertaken on the basis of basic theories and past production. by inquisition the basic theory and project of sreies - parallel resonant converter witch is a soft - switch converter was selected to outspread research and design work
本文是在吸收前人研究成果的基礎上,理論聯系實際,針對高效、高功率密度、高壓大功率直流電源展開的研製工作。在經過大量的實際調研工作的基礎上,選擇了一種軟開關變換器(移相控制的串-並聯諧振變換器)的技術方案,並圍繞該方案展開理論研究和實際的設計工作。In the power equipment manufacturing industry, delivery orders in 2006 will be large, which will drive the purchasing orders of the power transmission and transformer industry, with the entire power equipment manufacturing industry expected to grow at a rate of about 20 percent ; output of generating equipment is expected to fall in 2007, and the purchasing price of manufacturers has already started to drop, with few orders after 2008 ; the boom period of the high - voltage power transmission and transformation equipment manufacturing industry will lag behind, which will be favorable in terms of reducing the influence of the generating equipment slump
電力裝備製造業明年要交貨的發電設備訂單仍處于高峰,受其帶動,輸變電行業任務也很飽滿,整個電力裝備製造業有望達到20 %左右的增長;但預計2007年發電設備產量將由高峰開始回落;目前各製造廠訂貨價格已在下滑, 2008年以後的訂單明顯不足;與發電設備相比,高壓輸變電設備製造業的景氣周期將適當滯后,從而有利於緩解發電設備下滑的影響。Electrical conductivity and high pressure phrase transition study on the influential factors in the upper - mantle olivine
上地幔橄欖石電導率影響因素及高壓相變初探In chapter three, based on the analysis of the restricted factor of high frequency and the latest research achievements, it puts forward and designs the integrity structure of phase shifting pwm soft switching high voltage invert power supply. the main circuit, driving circuit and high voltage high frequency transformer are discussed in detail in this chapter
在分析了限制逆變電源高頻化因素的基礎上,綜合了軟開關技術的最新研究成果,本文在第三章提出並設計了移相式pwm軟開關高壓逆變電源的整體結構,對其中的主電路、驅動電路、保護電路和高壓高頻功率變壓器作了詳實的分析與設計。In this paper, a phase shifting pulse width modulated ( pwm ) soft switching high voltage invert power supply has been developed with the use of the principle of advanced invert technique and the new type of power semi - conductor device - insulated gate bipolar transistor ( igbt )
本文採用最新的逆變思想與新型的開關器件?絕緣柵型雙極晶體管( igbt ) ,研製出了移相式pwm軟開關高壓逆變電源。逆變技術發展至今,已經逐漸向大功率方向發展。分享友人