粒子截面 的英文怎麼說

中文拼音 [lìzijiémiàn]
粒子截面 英文
particle cross-section
  • 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...
  • 面 : Ⅰ名詞1 （頭的前部; 臉） face 2 （物體的表面） surface; top 3 （外露的一層或正面） outside; the ri...
  • 粒子 : grain; granule
  1. Abstract : the three - dimensional velocities of the manifold junction with rectangular section are measured by use of three - dimensional particle dynamic analyzer （ 3d - pda ）

    文摘:應用三維粒子動態分析儀（ 3d - pda ）測得了矩形截面三分支聯接的三維速度分佈。
  2. Generally speaking, in highly nenegy collisin the distort factor depend i ng on the degree of final particals can be regard as forward direction, the distort factor will weight down the cross section wholely

    一般來說，在高能入射情況下扭曲因子對出射粒子角度的依賴是可忽略的，扭曲因子對截面有一個整體的壓低效應。
  3. Abstract : from a universal formula for calculating the attenuation cross section of particles in arbitrary shapes, exact expressions for calcualting the attenuation cross section of polydisperse, small spheroids, whose rotary axes are in specific status, have been derived. attenuation cross sections of both liquid and ice particles in different shapes at different wavelengths in microwave band have been computed and analyzed. the results are informative to microwave remote sensing of precipitation

    文摘:從計算任意形狀粒子的衰減截面普遍公式出發，推導出了小旋轉橢球粒子群旋轉軸處于不同狀態時的衰減截面函數表達式，並計算分析各種狀態下衰減截面隨降水粒子相態、形狀和入射波波長的變化特徵，所得結果可用於降水微波遙感。
  4. The relative momentum of two final particles and the cross section are zero at the threshold energy for an endothermic reaction, while the relative momentum of two initial particles is zero and the cross section at the threshold energy for an exothermic reaction is infinite

    在吸熱反應的閾能處，出射粒子的相對動量以及截面均為零。在放熱反應的閾能處，入射粒子的相對動量為零，截面趨于無窮大。由於強子的動量僅提供如此低的質心系能量，強子物質中x 。
  5. Using digital image processing technique to process the solid - gas - water three - phase flow image and separate dispersed phase from the three - phase flow image, author calculated the bubble number, particle number in instantaneous image, area of bubble image and other parameters, and analyzed the effect of image enhancement, image segmentation, image analysis and other problems existed in bubble image processing

    應用數字圖像處理方法對水氣固三相流圖像進行處理，將其中的分散相分別提取出來，計算得出瞬時圖像范圍內的氣泡個數、粒子個數，氣相所佔流動截面比等參數；分析了圖像增強、圖像分割、圖像分析等方法在多相流圖像測量上的作用以及氣泡圖像處理中存在的問題。
  6. The calculation results show that the correlation between the multiplicity of intermediate mass fragments n ( subscript imf ) and total number of charged particles n ( subscript c ) is a sensitive observable for probing the isospin - dependent in - medium nucleon - nucleon cross section, but the isospin effects of symmetric potential on n ( subscript imf ) is not obvious in the chosen energy region

    計算結果表明在所選能區，中等質量碎片的多重性與帶電粒子總數之間的關聯是提取介質中核子核子碰撞截面的靈敏觀測量，而此時對稱勢的同位旋效應卻不明顯。
  7. In the lhc the destabilizing effects of magnetic imperfections is more pronounced at injection energy, because the imperfections are larger and a because the beams occupy a larger fraction of the coil cross section

    在lhc中，粒子注入能量中，不完美的電磁場產生的不穩定效應更為明顯，因為缺陷的程度更大，粒子束占據環繞橫截面的一個更大的部分。
  8. Space used microelectronic devices irradiated by the ions, the curves of seu cross section of the devices versus let ( linear energy transition ) were measured

    在重離子輻照下，測量器件單粒子翻轉截面（ ）對重離子線傳能密度（ let ）關系曲線，即- let曲線。
  9. This paper has studied the mean attenuation, scattering, and back scattering cross sections of groups of small rotating spheroids about characteristics of microwave scattering when their rotatory axes are oriented at random in any direction in 2d plane and 3d space respectively under the condition of normal distribution, and that those physical quantities are changed with different variance, expectation and wave lengths of incident electromagnetic wave

    本文研究旋轉軸方向分別在平面內和空間中隨機取向呈正態分佈時的小旋轉橢球粒子群的平均衰減截面、平均散射截面、平均後向散射截面等微波散射特徵，以及這些物理量隨軸向分佈期望、方差及入射電磁波波長的變化。
  10. The transverse expansion origins in early stages, but mainly develops and finishes during the late stage of the colliding. for those heavier particles, such as j /, e, and etc., becuase of their smaller hadronic cross section, they rarely participate the final state hadronic re - scattering, and depart the system much earlier. their transverse expansion maybe is the result of the cumulative collective effect during the early partonic stage

    這種橫向擴張起源於碰撞的初始階段，但是主要是在碰撞的後期完成，而一些重的粒子，如j 、和，由於具有較小的強子散射截面，幾乎不參與末態強子的再散射，較早的離開碰撞系統，它們所表現出來的橫向擴張運動可能是來自碰撞初期部分子階段的部分子的集體效應的累積結果。
  11. With the increase of variance, the difference in h - polarized or v - polarized incident wave and in the different mean cross sections is becoming gradually small until when the variance is infinity namely the rotatory axes of the group are uniformly oriented : at this time the different mean cross sections are independent of the polarized status of incident wave

    隨著方差的增大，入射波水平偏振和垂直偏振時的各平均截面的差異逐漸減小，減小到直至方差為無窮大時，即與粒子群取向的均勻分佈的情況相同，此時各平均截面與入射波的偏振狀態無關。
  12. For the clouds over xi ' an region, the quantity calculations of the backscattering cross sections for various reflection mechanism of cloud are dealt with. the results calculated show that the major contributions for the backscattering cross s ection come possibly from average cloud diameter, clear - air and humidity turbulence and also from distributions of cloud particles, especially, at higher frequencies

    再分析了雲的後向散射機理，計算了西安地區雲的後向散射截面；表明影響雲的後向散射截面的主要因素為雲滴平均半徑、大氣濕度湍流及雲粒子分佈，在較高頻率時更顯著。
  13. This thesis in theory deals with electromagnetic wave scattering by multilayered confocal and non - confocal spheroidal particles illuminated by gaussian beams, in which the main contributions are as follows : 1. in the case of multilayered confocal spheroidal particles, the scattered fields as well as the fields within each layer are obtained in terms of infinite series with spheroidal vector wave functions by using an appropriate expansion of the incident gaussian beam. by virtue of the boundary conditions, we write the set of equations for determining the unknown expansion coefficients and then solve it

    本文從理論上研究了多層共焦和非共焦橢球粒子對高斯波束的散射，主要成果如下： 1 .我們研究了多層共焦橢球粒子對高斯波束的散射，把入射高斯光，散射場，各層橢球內的電場和磁場用適當的橢球矢量波函數展開，應用電磁場邊界條件，寫出確定各展開系數的方程組，求出散射場系數，進而求出散射場及散射截面。
  14. These models require, in general, the rates of and energy released in nuclear reactions occurring in astrophysical environments

    而這些模型需要巨量的數據輸入，其中主要的是天體核反應率（粒子運動速度的分佈函數與截面的卷積） 。
  15. In present dissertation, firstly an analytical study on the force and deformation of an er single chain under poiseuille flow is presented from the point of microscopic view. an approximate solution of the poiseuille flow in a tube with rectangular cross is derived from galerkin approach. the balance equation of moment for the er chain is established to avoid using point - dipole model, which is not accurate enough in the case that dielectric particles are adjacent to each other

    本文首先從微觀的角度，分析電流變鏈在poiseuille流動中的受力以及變形，分析過程中推導了矩形截面管內poiseuille流動速度分佈的galerkin近似解，並採用理論力學軟索模型對電流變變鏈的受力進行分析，從而避免了點偶極子近似在粒子相距較近情況下引起的誤差。
  16. There are charge distribution of the nucleons a which is not a point, thus, in our invariant amplitude the form factor of nucleons a will come spontaneously, the cross section will be much imfluenced by the form factor

    由於在反應中原子核a為有大小電荷分佈的粒子而不是點粒子，從而在計算不變振幅過程中會出現形狀因子，這會對所計算的散射截面有很大的影響。
  17. It is necessary to calculate the resolution formula of cross section to fit experiment, but the formula always depends on special physical model. indeed it is difficult to give out an available result using some physical models, for example quantum chromodynamics problem mostly ca n ' t expand using perturbation approximations

    擬合實驗數據需要給出各種反應過程截面的解析公式，然而截面公式強烈的依賴於物理模型，甚至用有的物理模型很難給出所要的截面公式，比如粒子色動力學理論一般是無法用微擾展開進行簡化的。
  18. By driving expressions and using the method in numerical integration, the results of numerical calculations are analyzed, discussed and contrasted with different conditions, and they showed that there are evident differences in the mean attenuation, scattering, and back scattering cross sections of oblate spheroid particles when the variance is so small that it is near to zero namely it is the same as the rotatory axes are parallel with one direction and when h - polarized and v - polarized incident waves happened. these differences are depended on the relative differences in the average orientation of rotatory axes and the polarized directions of incident wave

    通過公式推導和數值積分計算並對結果做了討論和分析，對比各種情況表明：扁橢球粒子群在方差很小接近為0時，與粒子群旋轉軸一致取向的情況相同，入射波水平極化和垂直極化時的平均衰減截面、平均散射截面、平均後向散射截面有明顯的不同，這決定於旋轉軸平均取向和入射波極化方向的相對差異。
  19. Thirdly, the cluster - cluster aggregation model is used to study the possible structure of aggregated smokescreen particle. we also develop the mathematical radiation extinction model of aggregated particle based on t - matrix method. associated with monte carlo method, another computer program is designed to simulate the extinction cross section and scattering cross section of actually aggregated particle

    本文還將「凝聚體?凝聚體」凝聚模型應用於煙幕凝聚現象研究，模擬出了煙幕凝聚粒子的可能結構，並且根據t矩陣方法發展了凝聚粒子消光特性的計算方法，結合montecarlo方法，編寫了能夠模擬實際煙幕凝聚粒子消光截面、散射截面的計算程序。
  20. The calculated double differential cross section of the new model is compared with experimental data and previous scdw calculations with single particle model. the calculated cross sections are larger than those given by previous calculations at backword and forward angles and smaller than those given by previous calculations near the quasi - elastic scattering ( qes ) angle. the agreement with experimental data is much improved

    新模型的雙微分截面計算結果與實驗值以及以前採用單粒子殼層模型時的計算結果進行了比較，表明cdfm模型的引入對scdw模型的計算結果有較大的改進，使其在大角度和極小角度區域有所增大，在準彈性散射角附近有所減小，從而能更好地與實驗值相符合。
分享友人
分享到 Line

分享到臉書