碰撞密度 的英文怎麼說

中文拼音 [pèngzhuàngmìdù]
碰撞密度 英文
collision density
  • 碰 : 動詞1 （一物體突然接觸另一物體; 撞擊） touch; bump 2 （碰見; 遇到） meet; run into 3 （試探 ） tr...
  • 撞 : 動詞1 （猛然碰上） collide; strike; knock; bump against; run into 2 （碰見） bump into; run into;...
  • 密 : Ⅰ名詞1 （秘密） secret 2 [紡織] （密度） density 3 （姓氏） a surname Ⅱ形容詞1 （距離近; 空隙小）...
  • 度 : 度動詞[書面語] （推測; 估計） surmise; estimate
  • 碰撞 : 1 （猛然碰上） collide; run into; knock against; run foul of; crash 2 [物理學] collision; impact;...
  1. In this paper, we focus on the following three topics : ( i ) density distribution of dusty plasma in the low - pressure collisionless positive column the radial density distributions of electron, ion and dust particle in the low - pressure collisionless positive column are investigated with a fluid theory and a self - consistent dust - charging model

    本文著重以下三個方面的研究： （ ）低氣壓無碰撞輝光放電正柱區塵埃等離子體密度徑向分佈本文採用流體模型和自洽的塵埃充電模型，研究了低氣壓無碰撞輝光放電正柱區的電子密度、離子密度和塵埃粒子密度的徑向分佈。
  2. In this technique, the particle density in the beam is very low ( typically 105 thickness ), so perturbations from collisions and inter - ionic fields are absent

    而且離子密度低（一般密度為10 ~ 5 cm ~ 3 ） ，因此不會出現自吸收、碰撞退激發以及離子間場效應等現象。
  3. In high energy neutrino - emulsion collisions, the normalized distribution of two - particle relative pseudorapidity and the correlation between the mean maximum number density of shower particles and multiplicity are investigated

    摘要論述了高能中微子與核乳膠碰撞中，歸一化的兩粒子相對鷹快度分佈，和平均最大簇射粒子數密度與多重數的關聯。
  4. H. moreover, high density is required to increase the chance of collision. hence, the reactions can only take place in the core of the sun, with temperature over ten million degrees 10

    首先核聚變需要極高的溫度，讓氫原子核能有足夠的能量克服原子核之間的電排斥力，此外亦需要極高的密度去增加粒子碰撞的機會，所以核聚變只能在溫度高達10
  5. In order to make the theoretical calculation feasible, we first obtain an analytical formalism of partial integrals with respect to the coordinates of the core and target in the phase - shift functions and their cross terms of scattering matrix elements, if the density distributions of the core and target are fitted to a few gaussian forms. then the rest multidimensional integrals with respect to the impact parameter and coordinates of halo nucleons are performed by a monte carlo method

    為使理論計算變得可行，我們在核芯和靶核密度採用多個高斯分佈擬合的情況下，解析求解了各個散射矩陣元中的光學相移函數及交叉項含有的與暈核核芯、靶核密度分佈有關的積分;同時對與碰撞參數和暈核子坐標有關的積分（八重以上，並且積分維數隨暈核子數很快增加）採用蒙特卡洛方法計算。
  6. The relation between collisional absorption of the em - wave and the plasma density, plasma collision frequency, and incident wave frequency is obtained

    給出了不均勻非磁化等離子體密度、等離子體碰撞頻率、電磁波頻率與碰撞吸收的關系。
  7. The isospin effect and k production in intermediate and high energy heavy ion collisions ( hics ) are hot topics in the nuclear physics. based on the isospin - dependent quantum molecular dyanmics ( iqmd ) model and self - consistent relativistic boltzmann - uehling - uhlenbeck ( rbuu ) model, we have studied them and obtained some interesting results. as for the study of isospin in intermediate energy hics, we ' ve investigated how both stength ( q ) and density dependence of symmetry potential ( sp ) affect many measurable observables, such as the yield, phase - space, and isospin distributions of fragments, as well as the correlations between intermediate - mass - fragment ( imf ) multiplicity n and charged - particle multiplicity n, light - charged - particle ( lcp ) multiplicity n, and neutron multiplicity n,

    在中能重離子碰撞的同位旋研究方面，分別研究了對稱勢的強度（ c _ s ）和其密度依賴形式對中能重離子核反應各類碎片產物產額、相空間、及其同位旋的分佈，中等質量碎片多重數（ n _ （ imf ） ）與帶電粒子多重數（ n _ c ） 、輕帶電粒子多重數（ n _ k ） 、中子多重數（ n _ n ）的關聯等多種實驗觀測量的影響，以獲取對稱勢中該兩方面的信息，尤其著重於研究如何分別獲取有關該兩方面的信息的途徑。
  8. One important observable difference between black holes and other compact massive objects is that any infalling matter will eventually collide with the latter, at relativistic speeds, leading to irregular intense flares of x - rays and other hard radiation

    黑洞和其它密集質量物體之間的一種重要的觀察差異是任何掉進物質將最終與後者碰撞，以相對的速度，導致x射線和其它的難于輻射的不規則的強烈閃光。
  9. The thesis analyzed the effects, associated with the propagation of laser in plasma channel, such as diffraction, plasma defocusing, the third - order intensity - dependent nonlinearity, the relativistic self - focusing, the focusing and defocusing of the plasma channel, and the absorbtion in the collision plasma and the finite pulse length effect

    文中用哈密頓-雅可比方程方法和源展開方法分別對激光在等離子體隧道中傳輸所涉及的衍射效應、等離子體散焦效應、三階強度非線性、相對論自聚焦、等離子體隧道的聚焦和散焦效應、碰撞等離子體中的吸收效應、有限脈寬效應等等做了基本的闡述。
  10. A algebraic stress model based on the two - phase flovo pdf model considering particles collision

    考慮碰撞的兩相湍流概率密度函數代數應力模型
  11. The second aspect : from qgp kinetic equations with collision integrals, by using the relaxation time approximation, we calculate the distribution functions to the second order correction. we obtain the distribution functions for quarks ( and anti - quarks ) and gluons under perturbation of the fluctuation of the color field. then in the high - temperature - low - density area, we discuss the characteristics of the distribution functions, and use t hem to get the net baryon density and the energy density

    第二，從有碰撞項的qgp動力論方程出發，忽略自旋，在色漲落擾動下，利用弛豫時間近似，得到夸克和膠子分佈函數的二級修正，通過數值分析重點討論了高溫低密情況下qgp中成分粒子分佈函數的特性，並且由分佈函數得到凈重子數密度和能量密度。
  12. Because of the upper limit of the nuclear density, which prevents the core to compress too far, the collapsing inner core will bounce back outwards. this out - going inner core will collide with the in - coming outer core, which is collapsing rapidly. this collision will send off shock waves and create heavy elements, like uranium

    由於原子核的天然密度會成為巨大的阻力，防止核心進一步收縮，這時核心會猛烈反彈，以極高速塌縮的核心外殼會和反彈中的核心碰撞，產生強烈的沖擊波，同時產生出像鈾等比鐵更重的元素，並把恆星外殼炸毀，這便是
  13. An important relationship among the mean incident energy, reflective energy and the wall boundary heat flux is obtained by statistically averaging the energy values of those molecules colliding with wall

    通過對與邊界發生碰撞的分子進行統計平均，得到了分子反射能量與入射能量以及邊界熱流密度的關系式。
  14. It was found that the linear growth rate of srs is reduced substantially due to ld and cd. srs can occur only for a region determined by both electron temperature and density. gap in the spectrum corresponding to raman scattering can be explained by the present model

    結果表明碰撞阻尼和landau阻尼大大降低了受激raman散射的線性增長率，並且碰撞阻尼和landau阻尼的共同作用使得受激raman散射只能在四分之一臨界密度以下區域的一窄小的密度范圍發生，我們這個理論模型可以解釋受激raman散射光譜上存在的「縫」 （ gap ）現象。
  15. The performance of usscd is compared with the well known algorithm, icollide, through a series of experiments. the results show that, when the objects are evenly distributed, and the number of objects is large, the performance of usscd is better than that of icollide. in this paper, a class of non - uniform spacial subdivision method is proposed, which is composed of two steps : first, the space is coarsely subdivided non - uniformly, based on the distribution density of the objects, then, every subspace is uniformly subdivided

    提出了一種基於均勻空間分割的快速碰撞檢測演算法usscd ，與經典的icollide演算法進行了對比試驗，試驗結果表明，在物體均勻分佈的情況下，隨物體數量的增多， usscd表現出明顯的優勢；提出了一類非均勻空間分割方法，在該方法中，空間分割由基於密度的非均勻空間分割和對每個子空間進行均勻分割兩個步驟實現；提出了一種基於投影的非均勻空間分割方法。
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