查询词典 spectral analysis

Their structures were confirmed by elemental analysis, 1H NMR, and IR spectral data. The preliminary bioassay results showed that α-phenyl-sul-fonylcyclododecanone oxime 2,4-dichlorophenoxy acetate (8p) had inhibition ratio 100% and 80.07% against Digitaria sanguinalis Scop., and 100% and 88.70% against Abutilon theophrasti Medic. at concentrations of 100 and 1 mg/L.

初步生物活性测定结果显示，部分化合物具有一定的除草活性，如α-苯磺酰基环十二酮肟-2，4-二氯苯氧乙酸酯(8p)在浓度为100和1 mg/L时对马唐的抑制率分别为100%和80.07%；对苘麻的抑制率分别为100%和88.70%。

The oily substances and the acidic components were characterized using elementary analysis, IR spectral analyses and acidimetry.

采用石油醚和三氯甲烷分级萃取孤岛油田含聚污水中的油分，得到两个不同极性的组分F1和F2；用碱抽提法从酸值较高的F2组分中分离酸性物质并将其甲酯化，通过柱层析法将甲酯化物分成Ⅰ、Ⅱ和Ⅲ三个甲酯组分。

A rapid qualitative analysis of heavy metals in paints can be achieved by analysis of spectral emis

通过对等离子体辐射光谱的研究，能够实现对油漆样品中重金属元素含量的快速定性分析。

Spectral signal analysis is not only an important part of the analysis system of spectrometer, but also key to intelligence of spectromet...

光谱信号的处理与分析是整个微型光谱仪分析系统的重要组成部分，也是光谱仪智能化的关键所在。

These results can be turned into terms of spectral density and Weibull probability distribution. All the analysis results can be used in design and analysis of deepwater mooring system.

在对各种时历结果进行处理后，可得到各种结果的谱密度和Weibull概率分布，为深海系泊系统的设计和分析提供参考。

In this paper an analysis of the multispectral images space and spectral features is presented, and useful lossless compression techniques such as preprocessing, prediction and transformation are introduced, and also a comparative analysis of these techniques is discussed.

本文分析了多光谱图像的空间和谱间相关性等特点，从多光谱图像预处理、预测和变换无损压缩方法等方面介绍了目前主要的多光谱图像无损压缩方法，并对其特点进行了对比分析。

Their structures were detailedly identified on the basis of chemical methods (sugar composition analysis, glycosyl residue linkage analysis, partial acid hydrolysis, periodate oxidation, Smith degradation, acetolysis, Congo Red experiment, etc.), spectral technologies 1D, 2D NMR, ESI-MS, IR, etc.

通过各种化学方法（糖组成分析，糖残基连接方式分析，部分酸水解，高碘酸氧化，Smith降解，乙酰解，刚果红实验等）、光谱方法（1D、2DNMR，ESI-MS，GC-MS，IR等）和物理化学方法（分子量分析，粘度分析，旋光度分析等）对各纯化多糖的化学结构及糖链构象进行了鉴定。

The chemical analysis of N, P and K in organic fertilizer is presented: sample is decomposed by sulfuric acid-hydrogen peroxide and prepared to be a solution. N can be determined by NC-2 model quick N analysis set, P by chinoline molybdic acid method and K by tetraphenylboron potassium, needless of spectral photometer and flame photometer, the method is available when the content of N, P or K is over 0.1% with desired accuracy and precision.

介绍用化学分析方法测定有机肥料氮、磷、钾的含量，即样品经硫酸-过氧化氢消化后，制备待测溶液，分取待测溶液用NC-2型快速定氮仪测定氮，用磷钼酸喹啉重量法测定磷，用四苯硼酸钾重量法测定钾，不需使用分光光度计和火焰光度计，适宜一般复混肥料厂采用，对含氮、磷、钾分别达0.1％以上的样品均可用本法测定，方法的准确度和精密度能满足生产的要求。

This paper uses ENVI to achieve the spectral mixed analysis and does the correlation analysis with NDVI and Tasseled Cap.

本文利用ENVI软件实现混合光谱分析，并对SMA分解结果分别与NDVI和缨帽变换分量进行相关性分析。

After analysis of TM/ETM+ datas advantage over the forest change detection, Tasseled Cap transformation, Principal Component Analysis and Normalized Difference Vegetation Index were chosen to enhance the vegetation spectral information.

在分析ETM+数据在森林资源监测中的优势的基础上，通过缨帽变换、主成分分析和植被指数法增强植被光谱信息，结合专家分类系统对沿海防护林主要树种进行提取。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。