long-time stability 中文意思是什麼

long-time stability 解釋
長期穩定性
  • long : n 朗〈姓氏〉。vi 渴想,極想,渴望 (for 〈古語〉 after to do)。adj (longer longest )1 長,長的...
  • time : n 1 時,時間,時日,歲月。2 時候,時刻;期間;時節,季節;〈常pl 〉時期,年代,時代; 〈the time ...
  • stability : n. 1. 穩定,穩定性,穩度。2. (船等的)復原力。3. 鞏固;堅定,持久不變。
  1. Which have the following advantages : high coercive force, high electric resistance, long - time stability, and economical price

    它們具有:高矯頑力、高阻抗、長效穩定性和經濟的價格。
  2. The mips were synthesized using methacrylic acid as the functional monomer and ethylene glycol dimethacrylate as the crosslinker by the non - covalent method. the sensors exhibited good sensitivity, selectivity and long - time stability even in harsh chemical environments

    這些傳感器具有很好的熱和化學穩定性,即使在苛刻的環境中仍顯示了良好的操作性能,極大地克服了生物傳感器的缺陷。
  3. This paper, in the light of the special geological environment and actual project situation of the three gorges reservoir area, puts forward a comprehensive analysis and evaluation system suitable for the stability analysis of the bank landslide of the three gorges reservoir area under the premise of thorough consideration of the water influence on the stability of the bank landslide, and obtains the following achievements in several aspects that have the practical application significance and certain scientific research value : ( 1 ) it is discovered that the water activity is the primary factor of the formation of the new landslide and the revival of the ancient landslide. on the one hand, the rising underwater level reduces the actual stress of landslide ; on the other hand, the long time soaking of the underwater reduces the mechanics intensity of the landslide and the slide belt, both of which reduce directly the landslide stability ; ( 2 ) in view of the special condition of the three gorges reservoir area, this paper analyzes systematically the forces acted on the landslide of the three gorges reservoir area and the force varieties acted on the divided landslide when the water level changes between 175 meters and 145 meters. thus it is more scientific and comprehensive for the analysis of the forces acted on the landslide ; ( 3 ) this paper summaries systematically 10 kinds of typical computation projects by organic combinations of different kinds of situations in the dry season ( nature statue ), rainy season ( rainstorm or rains for a long time condition ), with 175m water level in the reservoir, during the earthquake, with the water level of the reservoir adjusted from 175m to 145m and so on, and produces

    本文針對長江三峽庫區特殊的地質環境與工程實際情況,在充分考慮水對庫岸滑體穩定性影響的前提下,提出了一個適用於長江三峽庫岸滑坡體穩定性分析的綜合分析評價體系,並取得了如下幾個方面具有工程實際意義和一定科學研究價值的研究成果: ( 1 )研究結果發現,水的活動是新滑坡形成或古滑坡復活的主要因素,一方面是由於地下水位升高降低了滑坡體的有效應力,另一方面是由於地下水的長期浸泡降低滑體及滑帶的力學強度,這兩方面的因素均將直接降低滑坡的穩定性; ( 2 )針對三峽庫區的特殊條件,系統分析了作用於三峽庫區滑坡體上的力系和庫水位在175m與145m間變化時滑體條塊的受力變化,從而使對作用於滑坡體上的力系分析更科學、更全面; ( 3 )通過對滑體處于旱季(天然狀態) 、雨季(暴雨或長期降雨狀態) 、 175m庫水位、地震以及庫水位由175m調節下降至145m等各種不同情況的有機組合,本文系統地歸納總結出了10種典型計算工況,並具體給出了相應的作用荷載的計算方法,使在庫區岸坡滑體穩定性分析評價時對計算工況選擇及其作用荷載的計算更具規范性; ( 4 )具體運用c + + builder開發了關于滑坡體穩定性綜合分析評價系統,使對滑坡體穩定性分析計算更方便、更準確; ( 5 )將上述滑坡體穩定性綜合分析評價系統應用於重慶市豐都縣名山滑坡穩定性分析的具體事例中,分析結果表明,本文所提出滑坡體穩定性綜合分析評價方法對三峽庫區的滑坡穩定性分析是實用可行的。
  4. It has been demonstrated directly or indirectly - 7 - that ak auto ab is an important element in the immune network and plays a important role in maintaining physiological functions, clearing aged cells and metabolic products, regulating immune responses and protecting against infection. in some pathological states such as psoriasis and contact dermatitis, a certain serum level of the antibody could inhibit the progression of the diseases, and is beneficial to the recovery from the diseases. after a long time studies on the production and regulation mechanism of physiological and pathological auto antibodies, meanwhile, experiencing an intensive academic debating on whether naas a " horror autotoxicus " or a " gnothi seaution ( know yourself ) ", a common viewpoint has been achieved that naa is of clinical significance in the treatment of immunity diseases for it ' s function in the immune system stability, immunoglobulin y and polyclonal ak auto abs have been used in treating inflammatory dermatitis, and recombinant antibody is under investigating

    抗角蛋白自身抗體( akautoab )是naa的重要組成部分,以往實驗通過雜交瘤技術、免疫親和層析技術和噬菌體抗體庫技術分別獲得單克隆akautoab 、健康人血清多克隆akautoab和基因工程人akautoab ,並對akautoab免疫學特性及在體生理和病理意義進行了廣泛的研究,直接或間接地發現akautoab是機體正常免疫調節網路的組成部分,在維護某些生理狀態的穩定、清理衰老細胞及代謝產物、調節免疫和抗感染等方面起到重要作用;在某些病理情況下(如銀屑病、接觸性皮炎等) ,體內akautoab的組分和滴度會發生變化,而正常水平的akautoab則有利於限制病情的發展,促進損傷的修復。
  5. As macromolecule capacitance type of sensor, humidity sensor possesses the traits of completely interconvert, high reliability and long time stability, speedy response

    濕度傳感器為高分子電容式傳感器,特點是具有不需校準的完全互換性,高可靠性和長期穩定性,快速響應時間。
  6. The stability of electric power system has been being focused for a long time toprevent a power system from losing synchronism after sudden fault , researchers have done much work and got many accomplishments this paper applied the direct feedback linearization ( dfl ) technique on the power system , a strong nonlinear system simulation results by matlab proved this method efficiency main works and results are as follows : this paper compared some existing methods in excitation control , fast valve control and coordinated control respectively, analyzed the developments and actuality of nonlinear control research in brief, illustrated why ransient stability could be greatly improved by using the fast valve control in chapter 3 , indicated the importance of coordinated control farther this paper introduced the inverse system theory, based on which , discussed the dfl theory, pointed out which had consistency with the inverse theory, expanded the dfl theory combined the idiographic model equations , made which adapt to the model of a single machine - infinite bus power system this paper referenced abundance articles and educed a set of equations , which could describe the dynamical process of excitation and fast valve control for synchronous generators in the equations , there were several very important parameters of power system - - rotor angle ( ) , rotor speed ( ) , generator q axis voltage ( eq ) , transient voltage ( e ' q ) , active power ( pe ) , mechanical input power ( pm ) , valve opening ( ) , generator terminal voltage ( vt ) , based on the model , nonlinear coordinated controller and terminal voltage optimal controller have been designed by using the expanded dfl theory and lq optimal control theory the simulation results showed that the controller could keep power system transiently stable under the effects of a symmetrical 3 - phase short circuit fault , which achieved better postfault regulation compared with another two routine methods , one is the proportion excitation controller and proportion fast valve controller, the other is the proportion excitation controller and the optimal fast valve controller, which could exert good performance when met 1ittle disturbance either

    在介紹逆系統理論的基礎上,詳細介紹了dfl理論,通過比較闡明了dfl理論其本質是逆系統方法的一類,並結合具體課題推導出的模型方程將dfl理論進行了擴展,使之適應于電力系統這個強非線性對象。通過參考大量的書籍文獻推導出一套實用的可將大型汽輪發電機勵磁與汽門綜合起來進行控制的模型方程,此模型方程涵蓋了電力系統中特別引人注目的幾個量- -轉子角、轉子轉速、發電機q軸電勢eq 、暫態電勢e ' q 、有功功率pe 、機械功率pm 、汽門開度、機端電壓vt ,在此基礎上建立了實用的電力系統簡化的數學模型,並將擴展的dfl理論應用於此模型系統,結合線性二次型最優控制理論設計出大型汽輪發電機的非線性綜合控制器及機端電壓最優控制器,通過模擬實驗與採用常規的按電壓偏差進行調節的比例式勵磁控制器+汽門比例控制及採用常規的按電壓偏差進行調節的比例式勵磁調節器和基於二次型性能指標設計的最優快控汽門(考慮發電機的飽和因素)進行了對比,證實了採用此種控制器可以有效地提高電力系統的暫態穩定性,並且在電力系統遭受小干擾時同樣具有良好的調節性能。
  7. Moreover, because there are many kinds of surface - active agents, there are many kinds of prescription and making technology, therefore, it is various in style that the iodine produced is bent over, the iodine with the document report bends over more than 100 kinds, in market not of our country sell iodine bend over because too it more than 10 kinds, like gathering there aren t ethylene glycol the iodines, ren base phenol, the iodine can only exist to bend over with the liquid state, the stability is bad, the sterilization level is low, the poisonous side effect is different, have been eliminated for a long time in the western developed country

    再者,由於表面活性劑有很多種,配方和製作工藝也有很多種,因而,生成的碘伏種類繁多,有文獻報道的碘伏就有100多種,我國市場上銷售的碘伏也有10多種,像聚乙二醇碘、壬基酚聚氧乙烯醚碘、聚醇醚碘、洗必泰碘等等,這些碘伏都只能以液體狀態存在,穩定性差,殺菌水平低,毒副作用參差不,在西方發達國家早被淘汰。不同的碘伏,從理化特性到消殺效果是大不一樣的。
  8. The evaluation method of element in state transition matrix is given when the wrong order of data packet is considered. considering the wrong order of data packets, the mathematic model of networked control systems with long time delay is developed. the sufficient and necessary conditions for stochastic stability of such networked control systems with long time delay are given

    分析了長時延網路控制系統的二階矩穩定性和隨機穩定性;針對網路傳輸中的數據包的時序錯亂問題,提出了第二緩沖器的方法;分析了網路誘導時延的markov特性,並給出了時延markov鏈的狀態轉移矩陣中元素的求取方法;建立了存在數據包時序錯亂時長時延ncs的數學模型,並給出了對應的長時延ncs隨機穩定的充分必要條件。
  9. The result of a great deal of experiment shows that the digital control method proposed in this paper is better than the analog one widely used at present. the stability of optical output power and spectrum including temperature stability and long time stability is advanced in great degree

    經過大量的實驗表明:與傳統的模擬控制方法相比,本文設計的數字控制方法能夠顯著的提高sld光源的出纖光功率和光譜的穩定性(包括溫度穩定性和時間穩定性) 。
  10. Eurostag is a large simulation analysis software package used in power system developed by the edf and tractebel of belgium. the most prominent point of this software is that it covers the full range of the phenomena, from transient to long - term stability. that is to say that the time of simulation lasts from the electromechanical oscillations to the daily load evolution

    Eurostag是法國電力公司( edf )與比利時tractebel共同開發的大型電力系統模擬分析軟體,它最突出的特點就是可以對系統進行全時間范圍內的模擬,具體的說就是模擬時間可以從系統機電振蕩開始直至一天范圍內負荷的變化,這是目前我們國內所使用的其它系統模擬軟體所不具備的。
  11. These research also approve some inherent phenomena in nonlinear systems such as the interleaving of stability region and instability region, the parameter sensibility of the instable modes, divergence after a relatively long time of chaotic swings ( transient chaos ), a cascade of period double bifurcations to chaos and etc. these phenomena are of great importance to both theoretical research and engineering practice

    研究還證實了一些非線性系統所特有的現象,如穩定域和不穩定域的相互交錯現象,失穩模式對參數的敏感性,一段時間混沌振蕩后的無界現象(稱為預無界混池) ,由周期運動經一連串倍周期分岔直至混濁等。這些現象對理論研究與工程實踐都具有重要意義。
  12. The tests of e - o applications by our flux ktp has been realized, the results showed : optical waveguides fabricated by using an ion - exchange process, which have an exchange - ion concentration depth profile and refractive - index profile, is close to a complementary error - function distribution, optical homogeneity and device thermal stability is much better. amplitude modulation switch formed by our flux ktp has the contrast ratio of 150 : 1 and insert loss is 2. 5 % at 1064 nm. high quality optical pulse with 1 ns width was cut successfully by using an e - o modulator from a laser pulse with 50 ns width, this modulator had run for three years, and the crystal did n ' t blackened, it showed our low conductivity flux ktp can endure high modulation voltage for a very long time

    Ktp晶體的電光應用試驗表明:用離子交換法製作的電光波導,其離子交換濃度、折射率變化符合餘弦誤差函數,光學均勻性以及器件的溫度穩定性較好;製作的強度調制電光開關,消光比為150 : 1 ,對1064nm激光的插入損耗為2 . 5 ;製作的電光調制器用於激光脈沖整形試驗,從脈沖寬度50ns的激光脈沖削出脈寬1ns的高質量光脈沖,該電光開關經過長達三年多的使用,沒有出現晶體變黑現象,說明本實驗的低電導率ktp晶體能夠耐受長時間的調制電壓。
  13. The process of sputtering resistance by woodceramics target was studied. the experiments proved that the film series could be used for a long time, with stability performance and could be used in farinfrared heating field

    研究了木質陶瓷鑲嵌靶鍍覆的電阻膜系的工藝,試驗表明該膜系可長時間使用,性能穩定,而且可以用於遠紅外加熱領域。
  14. Through the establishment of var and vecm model and the analyzing of granger causality relationship both long time and short time, the stability of model, impulse response function and etc. we conclude that there is not any monetary indicator that has significant influence both in long term and short term ; if we choose interest rate as the monetary indicator, we will have long term influence but long lag time as well ; but if we select loan as the monetary indicator the performance will at verse, the short time influence while the short lag interval

    通過建立對商品房銷售額、上海住宅銷售價格指數與各貨幣政策中介目標的var模型與vecm模型,分析變量間的長期與短期granger因果關系,模型穩定性與脈沖相應函數等,本文認為在房地產市場中不存在長期和短期都有效的某一貨幣政策中介目標;以利率為中介目標則滯后時間較長但影響力持續時間也較長;以貸款為中介目標則滯后時間較短但影響力持續時間也較短。
  15. As far as the soft clayey rock, widely distributed in guangdong, is concerned, it will swell after unloaded and soften during immersion. its strength decreases with time after excavation. as a result, the slopes probably lose their stability in a long time, and in deed there are some failure cases reported in engineering

    但對于在廣東頗具代表性的風化泥質軟巖,因開挖外露而導致的浸水軟化和卸荷膨脹,會致使邊坡巖土長期強度的減損,使得按巖土天然強度指標設計的邊坡的長期穩定性無法保障,也造成了一些工程事故。
  16. But often what is not obvious when reading a manufacturer ' s data sheet is how the initial accuracy of the device is affected by other key device parameters such as line regulation, load regulation, initial voltage error, output voltage temperature coefficient ( tc ), output voltage noise, turn - on settling time, thermal hyste - resis, quiescent supply current, and long - term stability

    但,人們閱讀廠家的數據手冊時,因受諸如(電源電壓)線性調整率、負載調整率、初始電壓誤差、輸出電壓溫度系數tc 、熱遲滯(系數) 、靜態電流和長期穩定度等參數的影響而使初始精度往往不明顯。
  17. Fluorescent spectra shows the irradiance efficiency improves. better environmental stability is indicated from tga and conductivity in the air in long time

    熒光光譜表明將pva與pan復合,增強了載流子的注入密度和限域效應,抑制了pan的非輻射衰減,提高了復合材料的發光效率。
  18. Diode pumped solid state lasers ( dpssl ) have become the central focus of the field of lasers due to their many advantages such as high efficiency, stability, good quality of light beam, compactness, long time and etc. diode - pumped passively q - switched laser is much efficient to obtain narrow pulse width and high peak power

    激光二極體泵浦的全固態激光器( diodepumpedsolidstatelasers , dpssl )具有效率高、穩定性好、光束質量好、結構緊湊、壽命長等優點。
  19. For a long time, people have carried out a large amount of research on the rotor angle stability, clarified the mechanism of angle instability, and set up a relatively mature theory of analysis and control that widely used in the power system

    長期以來,人們對功角穩定性進行了大量的研究,弄清了功角失穩的機理,建立了比較成熟的分析和控制理論,並在電力系統中得到了廣泛的應用。
  20. This paper analyses crystal oscillator ’ s character and technique targets, and the changes of these technique targets effect the time of crystal oscillator gives the error mode of crystal oscillator time, by discussing gps system and time service theory, we analyze random character of gps second pulse error. we combine long - time stability of receiver ’ s output signal and short - term stability

    該系統成功地應用於寬頻帶地震記錄儀中,使地震數據記錄的時基精度達到微秒級,可以解決大范圍的地震儀布設應用時的授時和空間定位(經度、緯度、海拔)問題,為地震數據記錄、分析工作提供了與國際標準時間同步的時間基準。
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