數密度 的英文怎麼說

中文拼音 [shǔmìdù]
數密度 英文
number density
  • 數 : 數副詞（屢次） frequently; repeatedly
  • 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
  1. Thermodynamical fluctuation of number density of particles in grand canonical ensemble of perfect systems

    理想體系巨正則系綜中粒子數密度的熱力學漲落
  2. Our results show that with the up to date experimental data, 13c can not sufficiently burn, the neutron number density decrease, the timescale of neutron source become long and these come into conflict with model of thermal pulse agb star

    研究結果表明，在新實驗結果下， 』 3c不能充分燃燒，中子數密度降低，中子源持續的時標變長，這與熱脈沖agb星的現有模型出現矛盾。
  3. The anton paar density and sound velocity analyzers combine two independent parameters, density and sound velocity, to cover a wide range of applications such as quality control in beer and soft drink production, concentration determination of sulphuric acid and oleum or ternary solutions

    安東帕密度和聲速分析儀結合兩種獨立參數- -密度和聲速，覆蓋大范圍的應用如：啤酒和軟飲料生產中的質量管理、硫酸、發煙硫酸或三元混合液體濃度的測定。
  4. The key components in laser gyro is he - ne ring laser, and the reciprocal action theory between light and medium is the base in studying the ring laser, use the lamb half classical theory, and on the base of density matrix theory, the optical brounch equation was established, which described the movement of amplifying medium atom in the ring syntonic cavity, and according to the medium polarize theory the self consistent equations was deduced, which describe the light intensity and phasic of the counter - propagating wave. on the basis of this equations, adopted the simulation software matlab and virtual instrument programming language labwindows / cvi, we can do some simulated experiments in study the phenomenas such as amplify and dispersive characteristic of medium, mode pushing effection, burned hole effection and pattern competition, lock - in of frequency and the characteristic of light intensity and phasic of the counter - propagating wave in laser gyro

    激光陀螺的核心部件為he - ne環形激光器，而掌握光與介質的相互作用理論是研究激光器的關鍵，採用拉姆半經典理論為主，在密度矩陣理論的基礎上，推導環形諧振腔中描述he - ne氣體增益介質原子運動的光學布洛赫方程，運用介質極化理論得出描述激光陀螺反向行波的光強、位相所滿足的自洽場方程組，在此基礎上，運用matlab模擬軟體和虛擬儀器編程語言labwindows / cvi ，對激光陀螺中的介質增益色散特性、頻率牽引效應、燒孔效應及模競爭、閉鎖效應及環激光的光強和相位特性進行模擬試驗研究，並且運用全量子理論，對激光工作原理進行分析，得出二能級系統單模輻射場的光子數密度分佈，得出激光場的光子統計分佈，模擬激光場的動態建立過程。
  5. Influences of initial damage on development of spalling damage have been indicated by analyzing the distribution of void number density, the cumulative percentage of void volume and the volume fraction of the different - seize voids

    通過分析孔洞數密度分佈、孔洞體積累積百分比、不同大小孔洞所佔體積份額的計算結果，指出初始損傷對損傷演化有直接影響。
  6. For the low pr hadrons, the bayon number density is very low and shows the evidence of early stage equilibrium. there exists elliptic flow character for the high pt hadrons

    對于低竹強于，在h 0處呈現較低的重子數密度，有早期平衡的明顯證據；對于高ptjffi子，有橢性流的特點。
  7. In the aspect of output characteristics, after applying the boundary conditions and the continue condition of two segments, the correlative dependence of average photon density in each segment has been obtained. combining this dependence with the threshold conditions, the theory foundation is settled

    在兩段式dfb激光器的輸出特性研究方面，利用邊界條件以及兩段之間的連續條件，導出了兩段平均光子數密度之間的依賴關系；這和兩段式dfb激光器的閾值條件表達式相結合，構造了本文研究激光器輸出特性的理論框架。
  8. Number density profile

    數密度輪廓
  9. As the key parameters in flow and heat calculations, density ( ) and enthalpy ( h ), there is still lack of a definite mathematical model for such parameters " computing method

    但作為流量計算中的關鍵參數密度（ ）和熱量計算中的關鍵參數熱焓值（ h ）的計算方法，卻沒有一個明確的數學模型。
  10. The incompressibility of the fluid is determined by introduction of a so - called particle density number

    流體的不可壓縮性是通過引人粒子數密度概念實現的。
  11. 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。
  12. In the discrete process the mostly used method, the control volume method, is used. in the study of gas - particle flows numerical simulation, the gemchip arithmetic is often adopted. but it cannot be used directly in the investigation of clean room because of the low volume occupancy ( its volume fraction orde r is 10 - 10 below )

    採用控制體積法對氣粒多相流的控制方程進行離散，在gemchip演算法基礎上，由於室內懸浮顆粒的體積分數數量級在10 ~ （ - 10 ）以下，無法直接求解，在研究中通過直接求解顆粒數密度，不直接求解顆粒的體積分數對離散方程進行了求解。
  13. 1 ' he nul1lber density of li2 was adopted to express the capability of hydrogen storage i11 cn ' ls

    在碳納米管儲氫研究中，首次引入氫分子數密度的概念。
  14. The macro - mechanical properties ( the elastic constants ) of the fractured rocks can be connected with the micro - parameter of crack ( crack number density )

    這個模型將微觀隨機參數（裂紋數密度）與非均勻裂縫介質的宏觀性質（彈性常數）直接聯系起來。
  15. Standard test method for wipe sampling of surfaces, indirect preparation, and analysis for asbestos structure number concentration by transmission electron microscopy

    用透射電子顯微鏡檢查法對石棉結構數密度進行表面的擦拭取樣間接制備和分析的標準試驗方法
  16. The distribution of the void number density has been numerically investigated under the condition of the same ratio of inner and outer diameters for all voids

    假設所有孔洞的內外半徑之比相同，用數值方法定性分析了材料在層裂損傷過程中孔洞數密度分佈的變化。
  17. The particles aggregation was simulated using particle - cluster and cluster - cluster aggregation model. several type of floes was reached and its morphological characteristics was analyzed the fractal dimension, density and porosity of floes was studied by changing sticking probabilities, sticking position, particle number, particle concentration, difrusion coefficient and motion trajectory. the parameters by which special floes growth were determined. in the study of morphology, floes of yellow river ' s loess particles was observed by tv - microscope. its morphological characteristics were obtained by image analysis. the effect of fractal dimensions by stirring time strring speed, macromolecule flocculant dosage, flocculant concentration and particle concentration was studie. its rule of change was obtained. on the basis of other studies, the flocculation kinetics and floes structure was studied

    本文應用計算機模擬技術，在二維空間內採用單體凝聚和集團? ?集團凝聚兩種模型對顆粒凝聚過程進行了模擬，得到了多種形態的絮體，並對絮體進行了形態分析，通過改變粘附概率、粘附位置、顆粒數量、顆粒濃度、擴散系數和運動路徑等模擬參數，我們考察了絮體分形維數、密度和孔隙率隨模擬條件變化的影響規律，得到了形成特定形態絮體的控制參數。
  18. The relationship between the gas and particles is obtained as well as the distributions of velocities both of gas and particle, temperature, particle number density, and other turbulent qualities such as turbulent kinetic energy and its dissipation rate. it finds that micro zone clean control through the well - designed flow pattern is possible

    在模擬的條件下探討了氣流運動和顆粒運動的關系，初步研究了通過氣流對不同分區進行潔凈度的控制實現的可能性，得出了不同送風狀態下氣相速度場和顆粒數密度的分佈、溫度及相關的湍流量的分佈。
  19. Meanwhile by using numerical method, the beam ' s one - order current density, and the power exchange between the beam and the field are solved. curves are given to illustrate the relations among the above solved parameters and the gap ' s transit angle in different electron velocity and number density

    然後通過數值求解得到了不同初始速度和電子數密度時徑向間隙中一階電流密度、高頻電場、電子束與本徵場的功率交換等隨間隙直流渡越角的變化規律。
  20. " l11e el1hct of icl1gth al1d diailletel ; each kind of single - walled nanotubes ( swn ' l ), was considered for l1ydrogen storage. our results show that tl1e maxill1ul11 value of l1ul11bcr dcnsity of h2 was 1ocated the region from d = 4. 0nln to d = 5. 0l1ln. w11cn tl1e dialllcter was flxed, 1he storage amount of il2 lineariy augl1lel1ted witl1 the tube ' s icngtll increasing

    研究了管長、管徑對儲氫性能的影響，得出如下的結論：在管徑d = 4 . 0nm至5 . 0nm間，管內氫分子平均數密度取最大值；當管子直徑固定后，儲氫量隨管長增加而線性增加。
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