粒子數差 的英文怎麼說

中文拼音 [lìzishǔchā]
粒子數差 英文
population difference
  • 粒 : Ⅰ名 （小圓珠形或小碎塊形物） small particles; grain; granule; pellet Ⅱ量詞（用於粒狀物）
  • 子 : 子Ⅰ名詞1 （兒子） son 2 （人的通稱） person 3 （古代特指有學問的男人） ancient title of respect f...
  • 數 : 數副詞（屢次） frequently; repeatedly
  • 差 : 差Ⅰ名詞1 （不相同; 不相合） difference; dissimilarity 2 （差錯） mistake 3 [數學] （差數） differ...
  • 粒子 : grain; granule
  1. The computational results of the particle images are agreement with the simulated datain reasonable, the most absolute difference of the displacement is 0. 6671 pixel at the x abscissa and 0. 7928 pixel at y abscissa ; the computational results are equal to the data form the algorithm of particle brightness - distribution pattern tracking ( the conventional cross - correlation algorithm ) at voluminous points, their discrepancy is only one pixel at few points, mostly in boundary area

    西安理工大學碩士學位論文最後，在visualfortran環境下給出了這種演算法的具體實現，處理模擬粒子圖像的結果與模擬數據比較吻合，最大位移絕對誤差在x方向是0 . 6671像素，在y方向是0 . 7928像素;計算結果與示蹤粒子灰度分佈模板法（基本的互相關法）在絕大部分點是相同的，只在少數點相差一個像素，而且大多出現在邊界區域。
  2. The influence of the cloud droplet spectrum character and the spectrum growth and change is considered, which does not use a cut - off value for conversion from cloud water into rain water process. in the continuous coalescence equation, the particles fall velocity difference is not moved out from the integral, but is integrated in the equation as the function of diameter d to avoid the error of using particles average fall velocity. in the new scheme, generation rate of graupel due to the collection of snow by graupel and the collection of cloud ice by graupel are included

    雲中凝結核ccn的數濃度採用超幾何函數表示；雲水向雨水的自動轉換過程採用grabowski （ 1999 ）的公式，考慮了雲滴譜的特徵和發展變化對該過程的影響，而不是採用原方案給定閾值的方法描述該過程；對連續碰並方程不再將粒子落速差作為常量提出積分號外，而是直接作為粒子直徑函數在積分號內求解，這樣處理可以迴避使用粒子群的平均落速帶來的誤差；增加了霰和雪、霰和冰晶的碰並微物理過程。
  3. Zircaloy - 4 sheet, which was cold - worked followed by recrystallization annealing, exhibits longer lcf life in the rolling direction than that in the transverse direction, and the fact that difference in lcf life between both directions becomes larger as the range of plastic strain becomes lower can be attributed to the texture effect, p - solution treatment deteriorates the alloy ' s lcf property because the treatment lowers the average value of alloy ' s schmid factors, and the subsequent annealing - treatment in a - phase range has a impact on the lcf properties, i. e. the subsequent annealing - treatment at 500 ? for 1. 5h results in better property than that at 750 for 1. 5h, which comes mainly from the fact that the alloy annealled at 500 for 1. 5h has lower amount of the precipitate particles than the alloy annealled at 750 for 1. 5h

    對于冷加工后經再結晶退火處理的zr - 4合金，軋制方向的低周疲勞壽命比橫向要大。隨著_ p的降低，兩個方向的低周疲勞壽命的差別相應增加，這是由於合金中存在織構的緣故。冷加工后經再結晶退火處理的zr - 4合金在固溶處理后，抗疲勞性能明顯降低，這主要是由於固溶處理降低了合金的schmid因子；固溶處理后在相區的退火對疲勞性能有影響，即500 1 . 5h退火的抗疲勞性能要優於750 1 . 5h退火，這主要與500 1 . 5h退火的合金中沉澱相粒子的數量較少有關。
  4. Standard test method for size - differentiated counting of particles and fibers released from clean room wipers using optical and scanning electron microscopy

    利用光電子顯微鏡和掃描電子顯微鏡對清潔室擦刷工具釋放粒子和纖維的尺寸差異計數的標準試驗方法
  5. In section one, we analyze the mechanism of lwi gain, and study the effects of the rabi frequency q of the driving field, the injection rates ratio rb / r ~, the exit rate r0, the decay rates ~ and rab between atomic levels, as well as 3 incoherent pump rate r on the gain without inversion, dispersion and population difference of the system. in section two, we discuss the effects of the detuning of the driving field and the probe field on the gain

    在第一節中分析了無粒子數反轉激光增益產生的機制、研究了驅動場的rabi頻率、粒子注入速率比值r _ b / r _ c 、粒子退出速率r _ o 、能級間的自發衰減速率r _ （ c - b ） 、 r _ （ a - b ）和非相干泵浦速率r對增益、色散和粒子數差的影響；第二節討論了驅動場和探測場的失諧對無粒子數反轉激光增益的影響。
  6. It plays a very important role in many application, according to the point of mathematics point, its mostly application originate from equations of mathematical physics, difference equations, markov process, and so on, its purpose is to solve the problems of solid, fluid, electromagnetic, microscopic particles, system control, and etc. in practical science research and engineer applications, such as, architecture project, research of aeronautics and astronautics, bioscience, computing physics and oil reconnoiter, many large scale generalized eigenvalue problems need to be solved

    它在很多應用中扮演非常重要的角色，從數學角度來看，矩陣特徵值問題的應用大多來自數學物理方程、差分方程、 markov過程等。目的是為了計算固體、流體、電磁、微觀粒子、系統控制等重大問題。在實際的科學研究與工程應用中，比如在建築工程、航空航天研究、生物科學、計算物理以及石油勘探中，都要涉及到大規模矩陣廣義特徵值問題的計算。
  7. On the basis of single mode superposition states, the squeezing and quantum statistical properties in the two - mode superposition states have been studied. the influences of the photon number, photon number difference, coefficients in the states and their relative phase on these non - classical properties have also been discussed. we have compared the results in the two - mode superposition states with those in the single - mode case

    在單模光子數疊加態的研究基礎上，研究了雙模光子數疊加態的壓縮性質和量子統計性質，討論了疊加態中粒子數、粒子數差、疊加態系數及疊加相位差對壓縮性質及量子統計性質的影響，並將其結果與單模疊加態進行了比較。
  8. In chapter 5, we make numerical calculation, then analyze the properties of the population distribution, the gain, the coherence term and population difference, and validate the transient light amplification mechanism of this system

    第五章我們根據數值計算結果分析了粒子數分佈、增益、相干項和粒子數差的瞬態演化過程，驗證了系統產生增益的機制。
  9. In chapter 4, we study nonlinear theory of the open v - type system with two - color incoherent pump. in this chapter, we discuss the conditions for the onset of lwi and the stability of the system in the limit of strong driving field, and the effect of incoherent pump rate rt on the gain, dispersion and population differences. we also discuss the effect of nonlinearities and the effect of pumping rate threshold of the pumping field

    接著第四章討論雙色非相干泵浦系統的非線性理論，分析了強驅動場情況下的lwi產生的條件和穩定性、非相干泵浦速率r ~ 1對增益、色散和粒子數差的影響；討論了該系統的非線性效應和非線性對非相干泵浦速率r ~ 1與r閾值關系的影響。
  10. In this paper, we study inversionless lasing of frequency up - conversion in an open v - type system with incoherent pump. making theoretical analysis and numerical calculation by density - matrix equations of motion, we derive the conditions for the onset of lwi and discuss the effects of the parameters of the system, the detuning of driving field and probe field on the gain, and discuss nonlinear effect in the frequency up - conversion regime. we also give stability and transient analysis

    本論文研究了具有非相干泵浦的開放v型系統頻率上轉換無粒子數反轉激光，利用密度矩陣運動方程，通過理論分析和數值計算，得出該系統產生無粒子數反轉激光的條件，討論系統各參數的變化和驅動場與探測場的失諧對激光增益、色散和粒子數差的影響，還討論了頻率上轉換區域的非線性效應，分析了增益的穩定性及系統的瞬態演化過程。
  11. In chapter 2, we analyzed the effect of the driving field phase fluctuation on the gain and dispersion and population differences in an open v - type three - level non - inversion lasing system and then discussed the effects of the incoherent pumping rate, the ratio of the atomic injection rates, the atomic exit rate, the rabi frequency of the probe and driving fields and their corresponding detuning on the gain, dispersion and population differences of the system, and got some important conclusions different from those in closed or other open systems

    第二章討論了驅動場的相位漲落對開放的v型三能級無反轉激光系統的影響，根據解析解的數值計算結果討論了非相干泵浦速率、粒子注入速率之比、粒子退出速率、探測場和驅動場的rabi頻率和相應失諧對系統增益、色散和粒子數差的影響，得到了一些不同於封閉的v型系統及其他開放的無反轉激光系統的重要結論。
  12. 1 ) the number of sandstorm days from 12 weather stations in the helanshan zone is documented, indicating that the events can happen on the east and west sides of the ranges all the year round, with high frequencies in april to may, averaging 3. 2 and 3. 1 days on the west side, respectively and with the eastern high frequency in april, averaging 2. 0 days. also, analysis reveals that the high frequency period for eastern station yanchi and western guaizihu is april, with 5. 4 and 5. 2 days, on average, respectively

    銀川、巴音浩特和通古淖爾三地背景大氣沙塵氣溶膠粒子的數濃度譜和質量濃度譜均呈單峰型，服從對數正態分佈，與城市污染物氣溶膠的三峰、雙峰質量譜明顯不同。浮塵、揚沙、沙塵暴天氣條件下，平均數濃度和質量濃度是依次增加的，可相差4 - 7倍。沙塵氣溶膠粒子譜分佈還與地理位置有關。
  13. And the results of these two methods really show difference. we analyze the condition for the condensation using the concept of entropy and reach the conclusion that there will be no bec in the low dimension system. we get the relation between the critical temperature and the given number of the particles in a three - dimension infinite trap system directly, together with the tendency shown at a low temperature of the critical temperature " changing to the particle number

    指出了兩種方法的結果在低溫區域的差別和高溫區域的一致性，比較結果表明，給定粒子數的系統處于低曲阜師范大學碩士研究生畢業論文第頁溫條件時，數值方法所求出的轉變溫度要比積分方法所得的結果高，並且轉變溫度隨粒子數的變化趨勢也要迅速，然後分析了兩種方法存在差別的原困。
  14. These experimental results show that < q12 > is independent of the dimuon mass and logitudinal momentum, and imply the scattering of the incident quark within the target nucleus. by means of the glauber model, the difference of the mean transverse momentum squared < qt2 > is studied for the dependence of the incident proton energy and nucleus. the theoretical results are in good agreement with the fnal e772 experimental data

    本文利用多重散射的glauber模型，討論了入射夸克在原子核中傳播的多重散射效應，給出了兩個不同的核drell - yan過程產生的末態輕子對橫動量平方平均值的差值對入射粒子能量核靶核的依賴性關系，計算結果與e772組的實驗數據符合甚好。
  15. Blend in molten state make hdpe crystals small, crystallinity large, quantity of cb particle benefit to conductivity decreasing ; in solid state cb aggregate is sheltered with a insulate hdpe film, also cb structure will be broken down during blend ; all of these will make conductivity bad. but processing alds can lower this effect obviously. 3. the effect of crosslink is restricting the movement of molten polymer molecules

    為此筆者認為固相混合使hdpe晶粒尺寸變小，結晶度增大，使得異相成核的晶粒增多，參與導電的炭黑粒子數量減少：熔混卻使炭黑粒子表面被覆一層絕緣膜：這都將導致材料的導電性明顯變差，同時兩種混合還會造成炭黑結構的破壞，皆使得材料的導電性明顯變差。
  16. 5 ) this thesis introduces the process of error within the dataflow model and analyzes the error in the particle tracing algorithms for vector field visualization

    5 ）在可視化數據流模型中引入誤差處理，對3d流場的數值粒子跟蹤計算進行了誤差分析。
  17. The results approve that i ac i is a good parameter to be a token of the diameter distributing of particles. then a criterion of mean fluctuation difference is put forward for b particle. fluctuation complexity varied with different particle, static bed height diameter particle and axis position of sensor are studied

    本文認為是顆粒密度的差異造成漲落復雜性均值的差異，而平均漲落偏差| c |廣定程度上是顆粒粒徑分佈的一個重要衡量指標，而且針對b粒子提出了平均漲落偏差判據，實驗數據和該判據有很好地符合。
  18. It is very important to the electromagnetic simulations. this paper base on the theory and method of electromagnetic calculation and fdtd, associate with the particle simulation technology, develop an algorithm to resolve the problem of the eigenmode analysis of the cold - cavity in practice

    本文從分析電磁場計算的基本原理和方法出發，立足於時域有限差分法，結合計算機粒子模擬技術和數值計算原理，開發出一種能夠分析計算高功率微波器件冷腔諧振頻率以及本徵模式的演算法。
  19. The analytical solutions of the gain, dispersion and population difference in the steady state of an open ladder lasing without inversion ( lwi ) system are at first given when the phase fluctuation of the driving field is considered. then the effects of the driving field phase fluctuation on the gain, dispersion and population difference are analyzed by the numerical results from the analytical solutions. our research shows that the phase fluctuation of the driving field will results in a finite line width ; with the line width increasing, the gain decreases monotonously, however, variation of the dispersion isn ? t monotonous, it has a maximum value when the line width takes some value ; the line width varying can ? t lead to change lasing from without to with population inversion

    給出了有驅動場位相漲落的開放的梯型無粒子數反轉激光（ lwi ）系統增益、色散和布居數差的定態解析解，進而用得到的數值計算結果分析了驅動場位相漲落對增益、色散和布居數差的影響.研究結果表明，驅動場位相漲落將導致有限線寬;隨著線寬的增加，系統增益單調地減小，但系統色散的變化並不是單調的，當線寬取某個值時，色散有極大值;線寬的變化不能導致無反轉激光向反轉激光的轉變
  20. For fermi system, the finite number effect adds a negative correction to the fermi temperature in 3d, 2d cases, whereas has no effect on 1d case

    有限粒子數效應降低了體系的實際的fermi溫度，這個差別也是由位勢的頻率分佈和粒子數n決定的。
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