查询词典 reflectance

A multi-distance measurements method is employed in this paper. A single parameter fitting method and a double parameters (reduced scattering coefficient and amplitude factor) fitting method on the basis of the least square Newton fitting algorithm is used to derive the optical parameters respectively. For the finite-thickness homogenous tissue, it can be concluded that the rest terms in expressions of diffusion reflectance and transmittance for the corresponding tissue geometries that subtract the exponential term contained source-detector distance depend on the detected position weakly.

在多程测量的基础上，使用单参数最小二乘牛顿法拟合方法和双参数（约化散射系数、幅度因子）最小二乘牛顿法拟合方法，得到有限厚均匀组织的反射率分布和透射率分布公式中除去包含测量位置的指数项的其它部分对测量位置皆具有弱依赖性的结论，并对拟合结果进行了分析讨论；而对于有限厚平板状双层组织，可根据对反射测量结果及透射测量结果进行拟合所得的约化散射系数间的差异及常数因子的正负判断双层组织的可能结构分布。

And some discussions are included. Additionally, the probable structure information for the finite-thickness two-layered slab tissue can be obtained from the diffusion reflectance and transmittance measurements according to the discrepancies of fitting reduced scattering coefficient and the sign of the amplitude factor.

标 签 医用光学与生物技术光学参数测量时间分辨漫射光谱多程测量蒙特卡罗模拟最小二乘拟合 medical optics and biotechnology optical parameters determination time-resolved diffusion spectroscopy multi-distance measurements Monte-Carlo simulation least square fitting algorithm

Fish meal ; Meat and bone meal ; Near infrared reflectance spectroscopy ; Partial least squares

鱼粉；肉骨粉；近红外反射光谱；偏最小二乘

In quantitative measurement of skin color,tristimulus values were obtained based on reflectance spectrum .

在皮肤颜色的定量测量中，颜色三刺激值是基于反射光谱获得的，而与反射光谱相比，荧光发射光谱可以反映皮肤组织更深层结构的信息。

The rutile TiO2 powder photocatalyst was prepared by hydrolysis process, and it was coated with WO3 by dipping process using tetrabutyl titanate (C16H36O4Ti) as raw material. The catalysts were characterized by XRD, Raman spectra, TEM and diffuse reflectance UV-Vis spectra.

以钛酸丁酯为钛源，采用水解法制备金红石型TiO2粉体，用浸渍法将制备的TiO2粉体包覆不同浓度的WO3（记为WO3-TiO2），并采用X射线衍射、拉曼光谱、透射电镜和紫外－可见漫反射光谱等手段对所得的光催化剂进行了表征。

The rutile TiO2 powder photocatalyst was prepared by hydrolysis process, and it was coated with WO3 by dipping process using tetrabutyl titanate(C16H36O4Ti) as raw material. The catalysts were characterized by XRD, Raman spectra, TEM and diffuse reflectance UV-Vis spectra.

摘 要：以钛酸丁酯为钛源，采用水解法制备金红石型TiO2粉体，用浸渍法将制备的TiO2粉体包覆不同浓度的WO3(记为WO3-TiO2)，并采用X射线衍射、拉曼光谱、透射电镜和紫外可见漫反射光谱等手段对所得的光催化剂进行了表征。

This suggests that the canopy spectral reflectance could be used to monitor castors growth vigor and nutritional status. The relationships between hyperspectral vegetation index NDVI, RVI and LAI, ABM were all highly significant with determination of coefficients (R2) as 0.6115、0.6363 、0.7102 and 0.6148, respectively.

构建的高光谱植被指数NDVI、RVI与LAI和ABM回归模型确定系数均较高，分别达到了0.6115、0.6363、0.7102和0.6148，可以用来估测不同物候期蓖麻的叶面积指数和地上部分生物量。

Based upon a point-charge plus point-dipole model, the crystal-field splitting parameters for α-TiCl3 layer crystal and β-TiCl3 fiber-shaped crystal were evaluated and estimated, respectively, and the results were used to interprete the diffuse-reflectance spectra of these crystals recently reported in the literature.

本文采用点电荷加点偶极模型，对α-TiCl_3片状晶体和β-TiCl_3纤维状晶体的晶体场分裂参数分别进行了计算和粗估，并用所得的结果翻译了文献上所报导的一些漫反射光谱数据；同时也估计了熔盐中TiCl_6络离子和溶液中Ti(H_2O)_6~(+3)络离子的八面体场分裂参数，所得结果与实验值靠近。

The aim of the present study was to investigate the feasibility of near infrared reflectance spectroscopyfor rapid assessment of the moisture content,crude protein and crude fiber of bamboo products for giant pandas.

本研究目的为探讨应用近红外光谱法快速测定大熊猫食用竹产品中水分，粗蛋白，粗纤维含量的可行性。

The Smith Impedance Chart is a important tool to analyze reflectance、Standing wave ratio and impedance of Device Under Test. It is also used in vector network analyzer.

Smith阻抗图是分析待测器件反射系数、驻波比和阻抗的重要工具，并且常用于矢量网络分析仪中。

Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.

在对危险的南部地区访问时，他斥责什叶派民兵领导人对中央集权的挑衅行为。

In fact,I've got him on the satellite mobile right now.

实际上 我们已接通卫星可视电话了