查询词典 differential cross section

Assuming that the intermediate system decayes with a statistical lifetime, the general behaviour of the threefold differential cross section d~3σ/dZdEdθ in the dissipative collisions of 68MeV ~(12)C+~(27)Al and 68.6MeV ~(12)C+~(40)Ca system are analysed in the diffusion model framework.

在扩散模型的框架内，用假定中间组合系统以一个统计的寿命衰变的方法分析了68MeV~(12)C+~(27)Al和68.6MeV~(12)C+~(40)Ca的耗散碰撞中产生的产物的三重微分截面d~3σ/dZdEdθ的一般趋向。

With the J/y anomalous suppression as a signal of QGP phase transition, on the basis of absorption of nucleons and comovers, the differential cross section of J/y production in high energy heavy ion collisions under the condition of the occurrence of phase transition is derived out, and the experimental data of NA50 collaboration in Pb-Pb collisions at 158A GeV/c is analysed.

以J/y反常抑制现象为夸克-胶子等离子体相变信号，在核与随动者吸收理论的基础上，导出了有相变产生时高能重离子碰撞中的J/y微分产生截面，并对NA50合作组给出的入射动量为158A GeV/c的Pb-Pb碰撞中的实验数据进行了分析，较好地解释了实验结果。

In the minimal coupling model of the electron and photon electromagnetic interaction,we have a precise calculation on the differential cross section of Compton scattering with electron renormalized chain propagator,and obtain the accurate result.

采用电子与光子电磁相互作用最小耦合模型，对电子重整化链图传播下Compton散射微分截面作了严格解析计算，获得精确理论结果；并将该计算结果与电子树图和重整化单圈图传播下Compton散射微分截面作对比分析，获得了有关辐射修正的重要信息。

Many high-rise buildings can be simplied into variable cross-section cantilever beam, which equation of free vibration is variable coefficient differential equation of higher order and there is no general solving process for which in mathematics.

对这类方程，数学上没有提供一般的解法。本文采用的级数解法可求出任何变系数的四阶微分方程，在给定边界条件下的解。

Then the stability solution of the variable cross-section compression bar, that is discribed by a partial differential equation with variable coefficient is transformed into solving a set of algebraic equations established in the subspace.

首先以均匀梁的低阶纵向振动模態函数构成求解子空间，然后在此子空间中把变截面压桿稳定由变系数偏微分方程描述的求解问题转化为非线性代数方程组的求解，从而简化了计算过程。

The results show that the angular distribution of the total differential cross section at zero degree increases and the position of oscillation minimum of the same order gradually shift towards small scattering angle along with the increase of the incident isotope He atom mass at identical collision energy. And crossing angle between the elastic and total inelastic DCS gradually decreases and the total inelastic DCS gradually increases.

结果表明：在相同碰撞能量时，随着同位素氦原子质量的增加，总微分截面在0°时的角分布逐渐增大，同一级衍射振荡极小值位置逐渐向小散射角方向移动；弹性与总非弹性截面交界角逐渐减小，总非弹性截面逐渐增加。

The crystal structure, phase transition, cross-section morphology and thermal expansion coefficient of the samples were investigated by X-ray diffraction, thermogravimetric and differential scanning calorimetry, scanning electron microscope and dilatometry respectively.

通过X射线衍射仪、热重-差示扫描量热、扫描电子显微镜、热膨胀仪等分析手段对样品的晶体结构、物相转变、断面微观形貌和热膨胀性能进行表征。

In this dissertation, considering the influence of transverse shearing deflection and noncoincidence of torsion center and gravity center, the equilibrium formulas of variable-curvature box-girder with rectangular cross section were established. Based on deformation expression of arbitrary point on the girder and relationship between inner forces and displacement equations, considering noncoincidence of torsional center and gravity center, the governing differential equations for variable-curvature box-girders were generalized.

针对具有竖直对称轴的矩形断面变曲率箱梁，考虑了挠曲剪切应变和曲梁剪心和形心分离的影响，推导了变曲率箱梁的平衡方程；通过箱梁内任一点的位移方程和内力-位移关系，推导了考虑曲梁剪心和形心分离的变曲率箱梁的挠曲扭转控制微分方程。

Using the models developed by Basu,Jones and Richardson,the paper analyzes the cross-section data,the differential data and pool data.

通过应用Basu模型、Jones模型、Richardson模型的截面、差分和混合数据分析，发现内部控制评价报告的披露与审核对会计信息稳健性、可操控应计利润和资源配置效率的促进作用不显著，自我评价报告的自愿性披露与审核没有显著地提高内部控制的效率。

The differential cross section, the polarisation and the spin-rotationparameter in elastic scattering of 180 MeV antiproton by 12C are calculated by means ofGlauber s multiple scattering theory and Pauli-correlated wavefunction .

在Glauber多重散射理论近似下，采用泡里关联的核波函数，使用一种唯象的湮灭势，对180MeV的在12C上的弹性散射微分截面，极化角分布和自旋旋转参数进行了计算。

Alternatively, the con- trollers can use the synchronous rectifier itself or loss- less inductor current-sensing methods to provide overload protection with lower power dissipation.

另外，康威特罗勒斯可以使用同步整流器本身或亏损减少电感电流检测方法，以提供低功耗过载保护。

Mr. Dauber's other Schatz hangs in his home movie studio.

多伯把沙兹的另一件作品挂在家里的电影室。