光谱特性

Through detailed calculation and analysis of the dispersion characteristic of the noble metals like Au and Ag, we found that the group velocity combined with the group refractive index can change from negative to positive with increase of the photons energy in the visible Drude region and has the spectral property which is in agreement with the experimental results obtained in this work.

通过对贵金属Au和Ag的光学常数的色散特性分析和数值计算，发现在可见光的Drude光谱区，表征光子能量传播方向的群速度和群折射率的值会随光子能量的增大而发生从负到正的改变，这与本论文研究的实验测量和观察结果相符合。

Therefore, the development of automatic measurement of a spectral response of the smart machines is also very necessary.

因此，研制出一款能够自动测量光谱响应特性的智能仪器也是非常有必要的。

It is simulated numerically the transmission of beams phase modulated and spectrally dispersed by the unit for smoothing by spectral dispersion put in the laser driver for inertial confinement fusion.

用数值方法研究了激光驱动器系统中使用光谱色散平滑单元后光束的衍射特性。

The photophysical properties of PyTS have been studied by steady state absorption, fluorescence emission and time resolved transient absorption spectroscopies.

本文利用吸收光谱、荧光光谱以及时间分辨瞬态吸收光谱研究芘四磺酸四钠盐的光物理特性。

Based on rate equations, by use of a new method, a semiconductor optical amplifier theoretical model is constructed taking carrier density pulsation, spectral hole burning, stimulated emission, free carrier absorption, two-photon absorption and ultrafast nonlinear refraction effects into account.

基于速率方程采用新的推导方法得到了可以用来讨论飞秒量级光脉冲传输特性的半导体光放大器理论模型，该模型同时考虑载流子浓度脉动、光谱烧孔、受激辐射、自由载流子吸收、双光子吸收和超快非线性折射效应。

Three-dimensional excitation emission matrix fluorescence(3DEEM) was used to investigate the characteristic fluorescence of dissolved organic matter s,such as humus,proteinoid,surfactant and vegetable tallow in the wastewater treatment process.

采用三维荧光光谱法研究了城市污水处理过程中溶解性有机物的三维荧光特性变化规律。

Three-dimensional excitation emission matrix fluorescence (3DEEM) was used to investigate the characteristic fluorescence of dissolved organic matters, such as humus, proteinoid, surfactant and vegetable tallow in the wastewater treatment process.

采用三维荧光光谱法研究了城市污水处理过程中溶解性有机物的三维荧光特性变化规律。

The influence of temperature on the spectra and nonlinear optics properties of the 4--4＇-aminoazobenzene compound Langmuir-Blodgettfilms were investigated using UV-visible absorption spectra and second harmonic generation technique.

采用紫外-可见吸收谱和二次谐波产生技术研究了温度对4-硝基-4＇-氨基偶氮苯分子Langmuir—Blodgett单层和多层膜的光谱和二阶非线性光学特性的影响。

The second-order nonlinear optical properties and spectra of an azo polymer thin films were investigated.

研究了一种偶氮聚合物薄膜的光谱和二阶非线性光学特性。

An organic cationic flocculant containing quaternary ammonium ion was synthesized using epichlorohydrin, diethylamine and 1, 2-diaminoethane as raw materials. The intrinsic viscosity, charge density and turbidity removal rate of PEFD were determined and its structure was characterized by FT-IR.

以环氧氯丙烷、二乙胺和乙二胺为原料合成了有机阳离子絮凝剂PEFD，对其电荷密度、特性粘度以及絮凝性能进行了测试，并采用红外光谱对其结构进行了表征。

They weren't aggressive, but I yelled and threw a rock in their direction to get them off the trail and away from me, just in case.

他们没有侵略性，但我大喊，并在他们的方向扔石头让他们过的线索，远离我，以防万一。

In slot 2 in your bag put wrapping paper, quantity does not matter in this case.

在你的书包里槽2把包装纸、数量无关紧要。