查询词典 spectral analysis

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。

The results showed that the application of time-frequency analysis to surface myoelectric signal during dynamic contraction may obtain more information that was not available using the traditional spectral analysis techniques.

研究表明将时频分析技术应用于动态收缩期间的表面肌电信号可以增加用传统的频谱分析技术不能得到的信息。

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。

In order to avoid or reduce arc fault hazard,the authors established an arc fault detecting test system with the method of power spectral analysis to study the early acoustic characteristics of fault arc ,and extracted the sound signature of early fault arc by using power spectrum analysis.

为了避免或减少故障电弧的危害，笔者建立了故障电弧探测试验系统，采用功率谱分析的方法对故障电弧的早期弧声特性进行了试验研究，提取出故障电弧的早期弧声特征信息。

A review is given on speciation analysis including hyphenated techniques,such as high-performance liquid chromatography,gas chromatography,capillary electrophoresis and spectral analysis,and so on.

而在一般的测试方法中都是测试样品中各价砷的总含量，不能给出有关毒理性的确切信息，这样就不利于研究砷对环境和人类生活的危害。

Analysis: direct phase,isocratic elution with n-hexane/dioxan e /methanol,spectral analysis, integration at 240 mn with correction factors accor d ing to Finzelberg D Andernach.

提取：室温下10倍氯仿，声波降解15分钟，旋转搅拌24小时；分析：直接定相，并以N-正己烷/二氧环杂乙烷/甲醇等清洗，光谱分析，参考偏差修正

Besides,we are equipped with NC machining center,CAD valve design center,sophisticated NC equipments,Plasma arc powder built-up welding machines,efficient machining equipments etc.,and facilities for material tests,chemical element analysis,nondestructive tests,ultrasonic scald,mechanical property,and spectral analysis,as well as a team of professionals.

拥有CAD阀门设计中心、先进的数控设备、等离子弧粉末堆焊机，高效加工专用设备等，同时建有材料化验、化学成分分析，无损检测，超声波探伤，力学性能，光谱分析等检测设备和专业人员。

Bispectral analysis and dynamic spectral analysis are applied to the wind data of June, 1997, measured by MF radar in Yamagawa, Japan, to investigate nonlinear interactions among planetary waves, tidal waves and gravity waves in the mesopause region.

对中纬度中频雷达1997年6月82km高度的小时平均风场数据进行了动态谱分析和双谱分析，得到了中层顶区域谱行为具有多样性和各向异性的特点，以及行星波、潮汐波和重力波之间相位相干的现象，讨论了中层顶行星波、潮汐波和重力波之间存在非线性相互作用的可能性。

Researches reveal that students who suffer from corporal punishment tend to resort to violence in their future life.

研究表明遭受过肉体惩罚的孩子倾向于在他们今后的人生中使用暴力。

Total sugar of sarcocarp and chlorophyll of pericarp increased firstly, and then decreased afterward along with altitude; Titratable acidity, ascorbicacid and anthocyanin of pericarp were increased along with altitude; The content of protein increased firstly and decreased afterward along with altitude; Carotenoid of pericarp were decreased along with altitude.

果肉总糖和果皮叶绿素含量随海拔高度升高先升高后降低；可滴定酸、维生素C和果皮花青苷含量均随海拔升高而升高；蛋白质在1720m处最大，1420m处最小；果皮类胡萝卜素随海拔升高而降低。