散射

First the traditional non-optical detection technology for gas concentrations is briefly introduced, such as ultra-sound technology, gas sensing, catalytic thermal, gas chromatography, interferometry applications, and then the spectral analysis based on the concentration of gas detection is discussed. The latest technological developments on the differential absorption spectroscopy, Fourier transform infrared spectroscopy, tunable laser diode laser absorption spectroscopy, laser radar and differential absorption Raman scattering laser radar, laser-induced fluorescence spectroscopy, laser Photoacoustic Spectroscopy are reviewed in detail.

首先对传统的非光学气体浓度检测技术作出了简单的介绍，包括超声波技术、气敏法、热催化法、气相色谱法、干涉法应用技术，被动检气管法，然后重点阐述了基于光谱学分析气体浓度检测技术的最新发展动态，其中分别对差分吸收光谱技术、傅里叶变换红外光谱技术、可调谐激光二极管激光吸收光谱技术、差分吸收激光雷达和拉曼散射激光雷达、激光诱导荧光光谱技术、激光光声光谱技术进行了详细介绍，最后提出了现代气体浓度检测技术的发展方向。

In this work the rheological behaviors during phase separation in thermoplastic modified epoxy resin were systemically investigated. The development of phase separation were followed by optical microscopy, scanning electron microscopy, transmission electronic microscopy, Synchrotron Radiation soft X-ray contact microscopy, time resolved light scattering, differential scanning calorimeters and rheometer.

本论文系统研究热塑性树脂改性环氧体系相分离过程中的流变行为，通过光学显微镜，扫描电子显微镜，透射电子显微镜，软X射线显微术，时间分辨激光光散射和DSC等仪器跟踪研究相分离过程，与体系的流变行为相对照，探究反应诱导粘弹相分离过程中流变行为。

The differential and partial wave scattering cross sections of Ne-H2(D2,T2) collisions have been calculated by close-coupling approximation method using Tang-Toennies potential model at the incident energy of 83.8 meV.

使用密耦近似（Close-Coupling）方法、采用Tang-Toennies势模型计算了惰性气体原子Ne与H2分子及同位素D2分子在碰撞能量为83.8 meV时的微分散射截面及分波截面，并与实验值和文献值进行比较。

Using the method we calculate the 〓 elasticdifferential scattering cross section, excitation differential scattering crosssection, and excitation cross section of electron collision with 〓 We transform the electron and molecule problem into electron problemby Born-Oppenheimer approximate. Mr Rossi, Dr. the Flinders University ofSouth Australia, calculated electron collision with molecule, but theexchange term he used become bigger and bigger as incident energyincreases, it is unreasonable, besides, the potential of electron and nucleus heused is somewhat rough. At present we correct these two terms. The potentialconsists of static potential, exchange potential, polarization potential.

电子与分子的碰撞过程的相互作用势主要是由静态势、交换势和极化势三部分决定的，这里对这三部分在动量空间中进行分波展开，推导出易于计算的表达形式，根据这些公式，并参考Rossi的弹性碰撞程序编写了计算电子与分子碰撞激发截面的程序，利用程序计算出势能矩阵元，通过求解Lippmann-Schwinger方程求得T矩阵元，便可求得散射截面。

All specifications apply for a diffusely reflecting matt white ceramic target....

最佳答案：所有的规格都适用于散射表面的无光泽白色陶瓷目标。

A new and simple gated photon counting system is described for the recovery of optical parameters in diffusive media.

讨论了一种新型而且简单的门控光子计数法，用来测量高散射介质的光学参量。

Real diffusor designs use an irregular surface having a complex pattern to scatter the sound waves even more thoroughly.

真正diffusor设计使用不规则的表面有一个复杂的模式，以散射声波更彻底。

A true diffusor scatters sound waves in different directions based on their frequency, rather than merely redirecting all waves in the same direction.

一个真正的diffusor散射声波在不同方向的基础上他们的频率，而不是仅仅重定向所有海浪的方向是一致的。

Where an angled wall simply deflects a sound - possibly toward a microphone meant to pick up another instrument - a diffusor scatters the sound over a much wider range.

凡直角墙只是推了良好-可能意味着对一个麦克风拿起另一仪器- diffusor散射的声音更广泛。

Wing and pylon form a structure which is the major lateral scattering sources of an ordinary aircraft because a dihedral angle of ninety degrees is formed.

常规飞机的机翼与外挂架构成90°的二面角，成为飞机侧向的重要散射源。

And Pharaoh spoke to Joseph, saying, Your father and your brothers have come to you.

47：5 法老对约瑟说，你父亲和你弟兄们到你这里来了。

Additionally, the approximate flattening of surface strip using lines linking midpoints on perpendicular lines between geodesic curves and the unconditional extreme value method are discussed.

提出了用测地线方程、曲面上两点间短程线来计算膜结构曲面测地线的方法，同时，采用测地线间垂线的中点连线和用无约束极值法进行空间条状曲面近似展开的分析。