查询词典 spectral

By computer simulation, we analyze the influence of the incidence plane, incidence angle and thickness of air gap on transmittance, and the dependence of the transmittance on wavelength is given in the spectral range which is required by the instrument system using Sellmeier dispersion equation. The transmittance of Grand-Taylor prism is tested in experiment, and the results are in good agreement with the theoretical results, so the correctness of the theory is verified.

论述了自行设计研制的偏振干涉成像光谱仪的工作原理，分析了其核心部件格兰-泰勒棱镜的分光机理；运用光线追迹方法，推导出了格兰-泰勒棱镜全视场角透过率计算公式；通过计算机模拟分析了入射面、入射角和空气隙厚度对该棱镜透过率的影响，并利用方解石Sellmeier色散方程，给出了该棱镜在仪器系统要求的光谱范围内透过率与波长的关系曲线；实验测试结果与理论计算公式相符，验证了理论公式的正确性。

In this method, fast Fourier transform is used as a converter between wavefront and its corresponding plane wave spectral.

在波前合成方面，本文根据傅立叶光学中平面波谱传播理论，给出了一种适合于平面波前的快速变换方法。

Computation on spectral and spatial distribution characteristics of infrared radiation of plume［J］.

尾焰红外辐射的光谱特性及空间分布特性的计算［J］。

Firstly, this paper designs a polar coordinate barotropic vorticity equation semi-spectral model and a quasi-geostrophic grid model in order to research the propagation of vortex Rossby waves and tropical cyclone intensity change entirely.

本文首先设计了一个极坐标系正压涡度方程的半谱模式、一个准地转格点模式对涡旋Rossby波传播和热带气旋强度变化进行了较为系统的研究。

The paper analyzes the change of the exit light from a circular polarizing filter used inversely according to the interference theory of polarized light, measures the spectral transmittance curves with the combining of circular polarizing filter and linar polarizing filter, and summarizes the photographic performance of the circular polarizing filter used inversely.

将圆偏振镜与线偏振镜组合，并使 1 4波片位于线偏振镜之间，测定出线偏振镜和圆偏振镜相对旋转至不同方位时的分光透过率曲线，探讨了入射光为线偏振光时出射光因偏振光的干涉而相应出现的强度和色度变化，并以此为模型，对圆偏振镜反向使用时的摄影性能进行研究和总结。

The influence of the spectral bandwidth of a polychromatic incident light on the imaging is also studied.

还研究了入射光的光谱带宽对成像的影响。

Application of polynomial approximation based single peak spectral lines interpolation algorithm in interharmonic analysis.

基于多项式逼近的单峰谱线插值算法在间谐波分析中的应用。

We put forward a new theoretical method named direct laser spectroscopy method, it holds some goodness which spectral method has not, it also showed that it was one of the best methods in molecular dynamics simulation by combined with the best method named chebychev polynomial expansion in time dependent wave packet theory. This had been approved bv example of H〓.

我们提出了一种新的理论方法即直接激光光谱法，这种方法具有以往常用的谱方法所不具备的优点，即高效性，并且通过与含时波包理论中最具有优越性的切比雪夫多项式展开方法结合，使得这种方法在动力学模拟中具有极大的优势，并以H〓分子为进行实验例。

Some stochastic Galerkin methods, combining the Askey polynomial chaos expansion for the stochastic inputs and the spectral method in the physical space, are proposed to approximate some popular model problems.

研究的算法基于随机方向上的Askey正交多项式谱分解和物理空间方向上的谱方法。

By using SP-2558 multifunctional spectral measuring system, the three-dimensional fluorescence spectra of ponceau 4R, amaranth, tartrazine, sunset yellow and brilliant blue were measured.

应用SP-2558多功能光谱测量系统，测得胭脂红、苋菜红、柠檬黄、日落黄、亮蓝等五种最常用的合成食品色素标准溶液的三维荧光光谱。

The dissecting of samples in group2 were difficult. The root of pulmonary artery and ascending aorta failed to be unfolded because fibrous tissue was tough, right and left fibrous trigone were too firm to be solved by hand. Cardiac muscle fibers couldn't be stripped along myofibrillar trajectory since they were prone to break because of their friability.

组2的心脏解剖困难，表现为纤维组织坚韧，游离肺动脉非常困难；徒手无法松解左、右纤维三角，肺动脉和主动脉根部的游离非常困难；心肌纤维坚硬、质脆，解剖时容易断离成碎块，无法沿纤维走行方向剥离。

We have battled against the odds in a province that has become increasingly violent.

我们对在一个争夺日益激烈省的可能性。