散射理论

In this paper, the relations between the transparence of polymer film and polymer structure, phase, and movability of photon have been studied by using stable and unstable scattering rates under different boundary conditions.

利用在给定一系列边界条件下的稳定，非稳定散射研究聚合物薄膜透光性与物质的结构、相态、光子运动等物理性能的关系，为工农业和先进技术合理选用聚合物质薄膜，提供了重要的理论和应用价值。

Considering the influence of inner ornament of vehicle, the internal scattered sound field of multilayer elastic/nonelastic cavity is studied theoretically in the paper.

考虑到汽车内饰的影响，本文从理论上研究了双层弹性/非弹性壳体的内部散射声场。

The scattering characteristics of plane acoustic waves by fluid-saturated porous cylinders are studied by using the Biot-Stoll's theory with consideration of loss factors, such as the viscosity of fluid and the nonelastic loss of solid skeleton.

依据Biot-Stoll的流体饱和多孔媒质声传播理论，考虑了流体粘滞和骨架非弹性损耗引起的衰减因素，研究了多孔圆柱体对平面声波的散射特性。

The development of new experiments for neutron halo is briefly described, while the isospin and energy dependence of Glauber theory and its importance in describing halo nuclei -nucleus scattering are discussed.

简要介绍了中子晕和质子晕研究的最新实验进展，同时，讨论了近年来发展的同位旋，能量有关的具有晕核结构的 Glauber理论及它在描述晕核与核散射时的重要性。

Firstly, we used the Raman scattering method which can calibrate in real time to measure the O2 (a1 Δ) yield of SOG for the first time in China. The measurement relative error is less than 8%. Based on the data from the experiments, we report the results that the diluent category and ratios influence the O2 (a1 Δ) yield. The relationship of P-τ values and the O2 (a1 Δ) yield of this SOG were given. The effects of distance and bypass of gas transportation on the O2 (a1 Δ) yield are investigated. Secondly, the chlorine utilization was measured by using Raman spectroscopy simultaneously when the O2 (a1 Δ) yield was measured. This method originated with us. The result about the chlorine utilization is coincident with other theoretic and experimental conclusions. The relationship given in this paper between gas stay time in SOG and chlorine utilization offers reference to improve the reaction efficiency and chemical efficiency of COIL. Finally, the partial water vapor pressure at the exit of SOG was measured by absorption spectroscopy. The water vapor fraction and partial pressure have trends changed with the generator total pressure, the diluentratios, and the BHP temperature. These experimental results are very important to improve experimental conditions of SOG, reduce the water vapor fraction, and enhance the output power of COIL.

由侧得的数据得到了加入稀释气体、稀释气体种类以及稀释比例对单重态氧产率的影响，给出了该发生器P一：值与仇产率的关系，还考察了传输距离对仇产率的影响；在国际上首创利用喇曼散射光谱法在侧量产率的同时进行了氯气利用率的检侧，侧试结果与其他理论及实验结果十分相近；给出了气体在发生器中的滞留时间与氯气利用率之间的关系，该结果为提高氧碘化学激光器的反应效率和化学效率提供了参考依据；另外采用了吸收光谱法对发生器出口处的水汽含量进行了测量、得到了水汽分压和百分含量随着发生器压力、稀释气体比例以及BHP温度等的变化情况，该实验结果对于改进发生器工作条件、减少水汽含量、提高氧碘化学激光器的出光功率具有十分重要的指导意义。

Introduce the principle of light absorption and scattering, which is the theoretical basis of turbidimeter works and understand the basis of photology further.

本文介绍了光的吸收定理和散射定理——这是浊度仪之所以能够分析并检测浊度的理论基础，通过分析进一步加深对浊度仪工作原理的了解。

The EM scattering and diffraction field of each element is computed by using physical optics and physical diffraction theory.

利用物理光学法和物理绕射理论计算目标每一单元的散射场和绕射场。

Present a new formula to evaluate the overflow value when upward recursion was used and an improved formula when downward recursion was used.

2利用Mie理论和尺度分布计算了水云的单次散射特性，和资料进行了对比，证明了本文计算方案的可行性。

The light scattering data were well described by the crossover model proposed by Anisimov and Sengers, and the effective critical exponentsγandυshowed nonmonotonic crossovers from the 3D-Ising values to the mean-field ones as the temperature departed from the critical point. The coexistence curves exhibited that the values of effective critical exponents for the order parameter of the refractive-index decreased as the distance from the critical point increased, however after the regular terms were subtracted, the nonmonotonic crossovers from Ising to mean-field critical behavior were exhibited. The influence of sodium bromide on the trend of the crossover was small.

静态光散射数据符合Sengers和Anismov等提出的临界跨接理论，关联长度和渗透压缩系数的有效临界指数存在非单调跨接，盐对于跨接程度的影响不明显；共存曲线研究发现，随着偏离临界温度，折射率的有效临界指数逐渐减小，但是当与共存曲线相关的正规项的影响被排除以后，体系表现出从3D-Ising到平均场行为的非单调跨接，盐对于跨接程度的影响不明显。

While α particle scattering could only be simply introduced in general physics course and could not be fully understood, because the Rutherford scattering formula could not be derived without the knowledge of theoretical mechanics.

但因卢瑟福散射公式需利用理论力学的知识方能推导，导致该部分内容在普通物理教学中只能简单介绍而无法深入展开。

In the negative and interrogative forms, of course, this is identical to the non-emphatic forms.

。但是，在否定句或疑问句里，这种带有"do"的方法表达的效果却没有什么强调的意思。

Go down on one's knees;kneel down

屈膝跪下。。。下跪祈祷