查询词典 reflectance

On the basis of sensitivity analyses using the PROSAIL model, the present study demonstrates an approach that uses a neural network based on image classification incorporated in PROSAIL for accurate retrieval of LAI. By including the soil reflectance index in the original PROSAIL model to take the place of soil background reflectance parameters that are difficult to determine, specific neural networks are constructed corresponding to individual types of vegetation cover.

在PROSAIL模型敏感性分析的基础上提出了一种基于影像分类的神经网络反演方法，引进了土壤反射指数用于替代原模型中难以确定的土壤背景反射参数，分别针对不同植被类型建立各自的神经网络，对经过大气纠正后的Landsat ETM+影像进行了模拟实验并同野外实测LAI数据进行比较。

Improvement of MT migration tomography technology Based on the immanent relationship between tomography purpose and suitable frequency segment selection, we raise an entire frequency segment multi-parameter tomography scheme of MT finite difference migration. We establish a mathematical relationship among apparent electromagnetism reflectance, migration reflectance, background resistivity and the true resistivity distribution. After the introduction of TE/TM mode superpose rate, we carry out the associated resistivity tomography of two polarization mode to adapt the practical data interpolating situation.

大地电磁偏移成像的改进：针对频段选择和成像效果的内在关系，提出全频段、多参数有限差分偏移的解决方案；构建视反射系数、偏移反射系数、背景电阻率与实际电阻率分布的数学关系实现偏移电阻率成像；同时引入TE、TM模式加权因子以实现两个模式的联合偏移电阻率成像，更好的适应解释工作需要。

Research on quantitative relation between multi-angle polarized reflectance and bi-directional reflectance of peridotite .

橄榄岩的多角度偏振与二向反射定量关系研究。

Basing on the theory, reflectance oximetry and reflectance sensor are designed and developed.

在此理论的基础上，我们对系统以及相应的传感器进行了设计开发。

For those reasons being listed above , this paper presents a large set of spectral signatures of the polarized reflectance acquired over different agrotype about the soil type, soil granularity and soil water containing with bi-directional reflectance photometer which was invented by engineer Jin^Xinfeng.

文章的第一节是前言；第二节是国内外研究现状；第三节是选题的意义；第四节是仪器和样本介绍；第五节是干土及一定含水量土壤的偏振反射特征；第六节是不同含水量土壤的偏振反射特征研究；第七节是不同粒径土壤偏振反射特征研究；第八节是全文的总结。

Lanzhou University,Lanzhou,730000The difference between the spectral reflectance curves of healthy and diseased larch canopies is obvious.In this work,we chose the larch plantations as the study object.Firstly,we selected 14 larch canopy samples and measured their spectral reflectance and photosynthetic pigment contents.Then we selected 8 spectral parameters to set up a series of linear regression models.

以吉林省延边州敦化、和龙两市林场中健康的和遭受落叶松早落病侵害的人工落叶松林为调查对象，在对野外采集的14个落叶松冠层样本进行光谱测量及光合色素含量测量的基础上，选取8个对落叶松冠层光合色素含量变化反映敏感的光谱参数参与建立其光合色素含量的一元线性回归和多元逐步回归模型。

Chlorophyll contents and xanthophyll cycle pool calculated from reflectance were closely related with cucumber tolerance to salt stress, and reflectance characteristics could be used as index to evaluate cucumber cultivar tolerance to salt stress.

利用光谱反射指标得出的叶绿素含量、叶黄素循环库的大小与黄瓜的盐害程度及不同品种的耐盐程度有密切关系，反射光谱特性可以用来作为筛选黄瓜耐盐的生理指标。

The seismic reflectance signatures of the Carboniferous volcanic rocks in the study area are divided into four types, including lobate/wedge reflection, tabular reflection, arc reflection, and mound/mushroom reflection. Based on previous studies and detailed well-seismic correlation, the lithofacies of volcanic rocks corresponding to different seismic reflectance signatures are recognized.

将该区石炭系火山岩体的地震反射特征划分为以下4种：舌状或楔状反射、板状反射、弧状反射、丘状或蘑菇状地震相反射特征；结合前人的研究成果和详细的井震对比，确定了不同的地震反射特征所对应的火山岩岩相。

We measured the light transmittance, reflectance and photosynthetic capacity of leaves of Mikania micrantha and 19 other species of plants (herbal and woody sp.) in the same community. M. micrantha and other plants were similar in transmittance and reflectance spectra and showed no apparent differences in the relation between leaf-optical and photosynthetic-related in the same community.

该文对薇甘菊及其所在群落内19种植物的叶片透射率、反射率和光合特征指标进行了测定，结果表明：薇甘菊与其它植物透射和反射图谱的变化趋势都比较相近，在各个光学特征指标与光合相关指标的相互关系中，薇甘菊并没有表现出区别于同一群落内其它植物的特征。

The petrographical composition and reflectance of Chinese steam coal are summarized and the change of petrographical composition and reflectance with coal formed age, coal classes and coal field is also analyzed and assessed here.

总结概括了我国动力煤的岩相组成、反射率等按成煤时代、煤种和地区的变化规律并对其进行了初步的分级。

Finally it offers the analysis of the fault-tolerance system as well as its test verification.

这样，运行于空间环境中的系统的设计目标就是在保证系统实时性

However, it is still difficult to find out the real reason of the increase of the keratinized gingiva during the orthodontic extrusion whether it is due to the proliferation of the gingival tissue or to its elastic nature, that is because the proliferation of the fibroblasts as well as the connective tissue changes in volume and the intra-fibers spaces were all immeasurable in most of the studies.

然而，仍然难以找到真正的原因增加的角化牙龈在正畸挤压它是否是由于扩散的牙龈组织或其弹性性质，这是因为增殖的成纤维细胞以及作为结缔组织的变化量和内部纤维空格都是不可估量的，大多数的研究。