成分分析

毛酸浆籽的超临界CO2流体萃取及成分分析

Supercritical CO_2 extraction and composition analysis of hair groundcherry seed oil

化合物型铝钛硼细化剂成分分析的X射线衍射法

Composition Analysis Method of Al-Ti-B Grain Refiner for Aluminium Alloy

香烟烟雾成分分析及其对DNA生物氧化能力研究

Analysis of Components in tobacco smoke and Study of its Biological Oxidative Ability on DNA

特别指出，当变量X多重相关性突出时，该文方法显著地优于主成分分析方法。

The method is markedly superior to of principal component analysis especially when X has serious multi-correlation .

尿石标本及双J管沉着结石的化学成分分析

The chemical component analysis of urinary stone and sedimented stone of double J catheter

用X射线能谱仪对一些宝石、玉石样品进行了成分分析，并测试了磁化率。

Composition analysis by X ray EDS and magnetic susceptibility test for different kinds of gems and jades are carried out .

主成分分析（PCA）分解法被广泛地应用于特征抽取的过程。

A popular decomposition called principal component analysis ( PCA ) is widely used for feature extraction .

独立成分分析应用于fMRI数据研究

Applying independent component analysis to fMRI data analysis

对激光熔覆层用扫描电境（SEM）进行形貌观察，并进行能谱成分分析，用XRD进行合金物相的表征。

The morphology of laser cladding layer was observed by SEM , composition analysis was applied by EDS , and the phase transformation was characterized by XRD .

用主成分分析法选取了最能代表西湖水质状况的7号点（湖心）作为研究对象，并用该方法筛选了部分水质参数，作为BP网络的输入变量。

Selecting spot 7 which can most represent the water quality status of it as study object and filtrating the water quality parameters as the inputs for network by principal component analysis .

利用主成分分析法，得出泰安市耕地减少的四大驱动因子：农民人均住房面积、第一产业GDP、非农业人口和公路里程。

The results showed that peasantry average house area , the first industry GDP , nonagricultural population and highway mileage are the four main factors of reducing cultivated land in Tai'an .

采用条件Logistic回归模型进行单因素分析，对单因素分析中有意义的预选变量进行共线性诊断后，进行主成分分析和因子分析，然后进行多因素分析。

Conditional logistic regression , principal component analysis , factor analysis and generalized relative risk model were used to analyse the risk factors and the potential interactions between some risk factors .

研究了8090Al－Li合金的YAG激光焊，通过金相观察、显微硬度测定以及电子探针微区成分分析，结果表明：在一定的焊接工艺参数下，能得到优良的焊接接头。

Welded joints of Al-Li alloy welded by YAG laser are investigated through metalloscopy , micro-hardness and electron probe micro-analysis . The results showed that a suitable welded joint can be obtained under proper welding parameters .

针对上述问题，提出了信息增益（IG）与主成分分析（PCA）相结合的特征选择方法。

Aiming at the preceding problem , this paper puts forward a feature selection method using Information Gain ( IG ) and Principle Component ( Analysis )( PCA ) .

为提高工程图识别中基于主成分分析（PCA）的特征提取的精度，讨论了PCA鲁棒性问题的两种提法。

One way to improve the robustness of principal component analysis ( PCA ) is studied in order to increase the accuracy of feature extraction based on PCA in engineering image recognition .

采用腐蚀挂片试验与XPS表面成分分析发现，在锈蚀的碳钢表面总伴有大量的含硫化合物吸附富集，吸附与锈蚀共存，二者是相互促进的关系。

It is found that sulfide is always enriched on the rusted surface through the XPS composition analysis and corrosion coupon testing . The corrosion and absorption coexist and mutually promote each other .

对涂层断面的成分分析表明，Si在涂层与基体间的界面处有富集的倾向，而这将有助于抑制Co对涂层附着力的不利影响，提高金刚石涂层的附着力。

Composition analysis on the cross section revealed that Si has a tendency to congregate to the interface between the coatings and the substrates , and this would be helpful in enhancing the adhesion of diamond coatings to the substrates .

对生成气的成分分析结果表明，煤岩气体产物中烃类约占80%～90%，CO2约占7%～15%；

The composition analyses of the formed gases show that , in the gas product of the coal rock , hydrocarbons account for 80 % ~ 90 % , carbon dioxide accounts for 8 % ~ 15 % ;

提出结合核主成分分析（KPCA）和自适应神经模糊推理系统（ANFIS）的色彩校正（KPCAANFIS）算法。

An algorithm for color calibration was proposed by integrating an ANFIS ( adaptive-network-based fuzzy inference system ) with KPCA ( kernel principal component analysis ) .

应用主成分分析法，通过综合所选定的各项肉质指标的成绩，得到一个客观的量化指标&肉质指数（MQI）。

In this study , prime component analysis was used to get an object meat quality index ( MQI ) .

酸藤子（Embelialaeta）叶营养成分分析与评价

Analysis and Evaluation of Main Nutrients from Embelia laeta Leaf

利用SEM，XPS和AFM对该探测器进行成分分析，并制作了与此GaN肖特基紫外探测器结构类似的GaN肖特基二极管用于研究它的失效机理。

The structure of the detector has been analyzed using SEM , XPS and AFM . According to the analysis of the structure , GaN Schottky diodes have been made to study the reason of electron irradiation-induced damage .

对焊渣进行了SEM形貌观察和EDS成分分析，并采用氦弧焊证实了焊接过程中焊渣在熔池表面成片分布，电弧斑点极大收缩。

Then SEM observation and EDS analysis of slag are carried out respectively . Separate distribution of slag on welding pool during welding and great constriction of arc spots are confirmed by TIG welding with helium shielding gas .

PSZ-1堵漏剂溶剂有害成分分析

Analysis of Harmful Components in the Solvent of PSZ-1 Caulking Compound

具体是利用主成分分析（PCA）方法对原输入空间进行重构，并根据各主成分的贡献率来确定网络结构，从而有效地解决了预测精度下降的问题。

To solve this problem the original input space is reconstructed by principal component analysis and the structure of the network is determined according to the contributions from the principal components respectively , thus , the above mentioned problem is effectively solved .

运用SAS软件对原始数据进行主成分分析，使16个原始变量减少到3个变量，即拉伸回弹性RT、压缩回弹性RC及单位面积质量W；

Principal component analysis of the data obtained is conducted by SAS software , minimizing the variables from 16 to 3 , i. e. , tensile recovery ( RT ), compressive resiliency ( RC ) and weight per unit area ( W ) of the fabric .

通过研究，可得出如下结论：自行车运动训练监控应依据训练目的，以心率、RPE、血乳酸、血清总睾酮和体成分分析等构建个体化生理、生化监控指标体系。

This research concludes that to construct the system of control index of individual physiological and biochemical , it should refer to training aim , and analyzes the heart rate , RPE , lactic acid , serum testosterone and body composition .

通过形貌观察、化学成分分析、扫描电镜及能谱分析、浸泡试验、自腐蚀电位测定，研究了岭澳核电站CRF系统碎石过滤器的腐蚀现象，其主要原因被归结为微生物腐蚀的作用。

With morphology observation and chemical composition analyses by SEM and EDS as well as immersion test and corrosion potential measurement , the corrosion of debris filters in the CRF system of Ling Ao Nuclear Power Station was studied . The primary cause was regarded as microbion induced corrosion .

给出了运用主成分分析对产品主要特性指标降维的方法，运用径向基函数神经网络构建了作业估算关系（AER），并进行了案例分析。

A product characteristic parameter dimension debasing method based on Principal Component Analysis is discussed . The Radical Based Function ( RBF ) neural network is adopted to establish the Activity Estimation Relationships ( AER ) and an example of AER is given .

高炉炉身煤气自动取样及成分分析系统在攀钢1号高炉上的应用

Automatic gas sampling and analysing system of Panzhihua blast furnace No.1