查询词典 dimensional analysis

The classical principal component analysis is one of the most effective feature extraction methods. PCA essentially gives the optimal representation in a minimum of mean square sense, so it is usually used to minify the dimension of high dimensional image pattern modes.

传统的主分量分析方法是最为经典的图像特征抽取方法之一，由于其本质上是在最小均方差意义下给出了模式样本的最优表示，所以它通常被作为对高维图像模式进行降维的一种常用方法。

According to the amino acid sequences analysis and the three-dimensional structure of MfphA,it was indicated that MfphA encoded by the novel gene located in bph gene cluster belonged to theα/βhydrolase family,which could hydrolyze the meta-fission products during the biodegradation process of monocyclic compounds.

根据MfphA的氨基酸序列分析和三级结构模拟的结果，说明mfphA基因所编码的酶属于α/β水解酶家族，可以在单环芳香化合物降解过程中水解芳环间位开环产物。

In the paper, the multidentate carboxylic acid ligands were used to combine with Cd, resulting in the three dimensional MOCPs single crystals—C12H16CdN2O8, with a low temperature hydrothermal synthesis method. The sample was characterized with IR spectra to affirm the organic groups in the frameworks, single-crystal X-ray diffraction to determine the crystal structure and composition of the frameworks, N2 adsorption isotherms at low temperature to measure the specific surface area and pore size distribution, and with TGA/DGA analysis to scale the thermal stability. Furthermore, the dissolution property and the photocatalytic activity of MOCPs under the ultraviolet ray condition were explored.

本文用低温水热合成法，用多齿羧酸配体异烟酸和Cd配位合成出[Cd(C6H4O2N)2(H2O)4]∞三维晶体并进行了表征：采用红外光谱法确认骨架中的有机官能团；用单晶X射线衍射分析法测定MOCPs的晶体结构，并确定其骨架的组成；通过低温氮气吸附等温线测定了其比表面积和孔径分布；以热重分析和差热分析测定材料骨架的热稳定性；测定了晶体的溶解性能；最后以亚甲基蓝为目标降解物，对[Cd(C6H4O2N)2(H2O)4]∞的光催化活性及亚甲基蓝的氧化动力学进行了探索(来源：A2444BC论文网www.abclunwen.com)。

In the field of thermal analysis, combined with the control volume method and the spectral band model, the discrete transfer method is employed to solve the three dimensional transient radiation and conduction heat transfer in the cylinders of nongray semi-transparent media with semi-transparent and opaque surfaces.

在热分析方面，对同时具有半透明和不透明界面、非均匀第二类边界条件及第一和第三类非线性混合边界条件下非灰半透明介质圆柱体内的辐射与导热三维非稳态耦合换热，用离散传递法结合控制容积法和谱带模型进行了求解，得出了某空间光学系统外遮光罩光学窗口内的非稳态温度场。

Seek applicability of occipitocervical measurement by using the spinal cord three-dimension measuring system built up upon the principle of digital correlation, on the basis of measurement and analysis of three-dimensional movements of the normal...

寻求以数字相关法原理为基础的脊柱三维测量系统在枕颈部测量中的适用性。

Methods By means of computer aided three dimensional measurement and analysis, a study on morphological features and inter relations of the cranio orbitozygomatic maxilla structures of twenty youths with pretty facial appearance was carried out.

应用计算机辅助颅颌面结构立体测量分析方法，对 2 0例正常青年的颅眶颧颌诸结构的形态特征及其相互间的关系进行了研究。

In my study, a three-dimensional finite element model of human cranial-maxillary complex osteodistraction was established. The stress distribution and displacement under different loads were evaluated. The experiment results were feasible and effective to the stress analysis in the process of orthodontic and orthognathic treatment.

本实验通过建立颅上颌复合体三维有限元模型，分析上颌骨LeFort Ⅰ型截骨后牵张成骨的生物力学特性，明确在不同牵引方向时上颌骨复合体各部位的应力分布特点及位移趋势，为临床改良和优化颅面部牵张成骨的治疗方案提供一定的参考依据。

Aimed at these problem, this paper taked 63 well drilling's rock mineral document and logging document as main analysis object, combined reservoir sedimentology, sequence stratigraphy, logging geology together to research sedimentary system, sequence stratigraphy, lithofacies paleographic, sandbody distribution three dimensional visualization, reservoir character and reservoir sandbody comprehensive evaluation, it offers reference and criterion for Changbei gas field gas reservoir's exploration and development.

针对目前所存在的地质问题，本论文以63口钻井的岩矿资料和测井资料为主要分析对象，运用储层沉积学、层序地层学、测井地质学等多学科交叉的综合研究方法，对长北气田上古生界二叠系山西组2段进行沉积体系、层序地层、岩相古地理、砂体展布三维可视化、储层特征以及储集砂体综合评价和有利区预测等方面进行系统和深入的研究，为更有效地勘探开发长北气田提供科学依据。

Methods Fifty-two patients with aortic arch abnormalities were selected by two-dimensional Doppler analysis from suprasternal and parasternal views using retrospective method.

回顾性分析52例主动脉弓降部异常患者的胸前及胸骨上窝二维及多普勒超声表现。

So it is of much significance to study the mechanisms of ovule development and abortion of Chi- nese pine. By combining two-dimensional gel electro- phoresis (2-DE) and mass spectrometry analysis, the pat- terns of gene expression in a specific tissue at a specific stage can be displayed and characterized.

双向电泳和质谱技术结合研究基因表达的蛋白质组技术正越来越广泛地应用到植物研究中，我们将该技术应用到油松胚珠发育的研究中，比较了两种蛋白质提取的方法，发现蔗糖提取方法比传统的TCA 方法更适合于油松蛋白质的制备。

The role of the environment is very important.

的作用，环境是非常重要的。

At that time, the High Court of England and Wales Court of Queen's Bench president of William Murray, Lord Mansfield in June 22, 1772 ruling:"No matter then there is the inconvenience, but there must be a decision, I can not say that this case under the law in England are permitted or authorized; are so black should be released."

当时的英格兰及威尔士高等法院王座法庭院长William Murray， Lord Mansfield于1772年6月22日宣判：「无论有那麽不便，但总要有个决定，我不能说这件案在英格兰法律之下是准许或认可；所以黑人是应该被释放。