参数

In order to solve the composite inversion problem of the flexible arm structure, an improved identification method is proposed by combining the relaxation method with the modified total compensation method.

为了解决悬臂型桥墩结构在输入信息未知条件下的物理参数识别问题，采用将松弛法与改进的全量补偿算法结合起来的算法，通过对参数的离散化，对输入未知条件下的－悬臂型桥墩结构的多个物理参数进行了识别。

On the basis of a great deal of information, several general problem on land sarface process parametrization for a global circulation model and its history of development are described. The Bucket model, EARTH, ISBA and SiSPAT models are respectively expounded, and the situation of studies on land surface process parametrization is summarized. China is a participating country of the international geosphere-biosphere program and the study on circulation of global energy and moisture, and has put forward some valuable soil-vegetation-atmosphere models for land surface process parametrization. which results in effective studies on vegetation indexes.

在大量资料基础上，叙述了大气环流模式陆面过程参数化方案的一般问题及其发展历程，分别阐述了水桶模式、EARTH模式、ISBA模式和SiSPAT模式；总结了在陆面过程参数化方面的研究状况，我国参与了国际地圈生物圈计划和全球能量与水分循环的研究，特别是在陆面过程的参数化研究方面，提出了一些有价值的土壤—植物—大气模式，对植被指数进行了有成效的研究。

Parameterizing a 3D mesh means finding an isomorphic mapping between a discrete surface patch and a planar mesh.

三角网格的参数化是指从空间三角网格到参数区域的一个同构映射，参数区域的选择可以是平面区域、球面等。

A new concept of turning line of reduction parameters and its determination method is put forward in this paper for analyzing the isopleth diagram showing the relationship between reduction degree and reduction parameters in reduction of compressed scale lump containing carbon, and the method of optimal selection for reduction parameters is obtaine

应用文章提出的还原参数界线概念及其确定方法对铁鳞配焦压块还原过程中反映还原参数与还原指标关系的等高线图进行分析，得出还原参数优化选择的具体方法。

To simplify the finite element analysis process of tower crane jib, the parameters modeling created by the rapid input to the key parameters to complete the tower crane jib analysis and calculation.

目的 利用参数化设计系统简化塔式起重机臂架有限元分析过程，创建参数化模型，通过对关键参数的输入快速完成塔机臂架的分析计算。

In order to optimize the distribution and the shape of triangles, a Laplacian smooth procedure has been employed.

由于不涉及以基网格为参数域的原始网格的参数化，从而避免了参数化所需的大量计算；同时，采用Laplacian平滑技术，获得了有较规则形状和较均匀分布的三角网格。

The Si/Al ratio of NaY molecular sieve was determined by an empirical formula of lattice constant obtained by extension function method of X-ray diffraction and framework Si/Al ratio of NaY molecular sieve determined by solid nuclear magnetic resonant spectrum method.

前言晶胞参数是决定晶体结构的重要参数之一，Na Y超稳分子筛属立方晶系，由于 Na Y超稳分子筛骨架硅铝比受许多条件的影响，如投料比、晶化温度、晶化压力和晶化时间等。通过研究发现分子筛骨架的硅铝比与其晶胞参数相关，而分子筛的硅铝比可作为合成分子筛产品质量的控制指标 [1] 。

It is based on the interaction of stress wave in medium and the law of reflection and penetration when stress wave encounters an interface of dissimilar medium or an unequal section.

本文利用工程中可实际运用的一维线性应力波理论，以应力波在介质中的相互作用及其在不同介质界面和不等截面上的反射和透射机理为基础，通过建立合理的由不同材料组成的力学模型，详细探讨了在炸药爆轰这一极其短暂的过程中，主要载荷参数、结构尺寸参数和材料参数等诸多制约因素对子母弹开仓过程和应力波传播的影响规律。

The thesis analyzes the methods for parameter estimation of distributed sources in detail, and low complexity estimators, comes up with RELAX in parameter estimation and robust method of high resolution parameter estimators for distributed sources, and gives theory analysis and simulation results. The main work is:1 This text gives a study of the signal models of two kinds of distributed sources: coherent distributed sources and incoherent distributed sources, analyzes eigenvalue distribution of correlation matrix.2 Systematically introduced parameter estimation of distributed sources on the base of models, including the maximum likelihood estimate, least squares estimator, DSPE, DISPARE, etc.

论文详细分析了已有分布式目标参数估计方法及低复杂度的参数估计方法，提出了分布式目标参数估计的RELAX算法和具有稳健性的分布式目标高分辨估计方法，并给出了相应的理论分析和仿真实验结果。

The methods of computing for similar coefficient were Discriminance of Minimal Difference of Parameters, Discriminance of Limen of Tree Compositive Character and Synthetic Weight Similarity of Parameters. The contribution of all parameters were considering as same for DMDP and DLTC, but it estimate s the similarity between parameters according to the limen for DLTC. DMDP was based on the principal component analysis for wood transverse section micrograph characters and computing the similar coefficient according to the contribution of every parameter.

其中最小差值差数判别法与树种综合特征阈值法是将每个特征参数对木材横切面显微图像特征的贡献率视为一致，只是树种综合特征阈值法是以阈值的大小来判断特征的相似性，而综合加权相似法是建立在对木材横切面显微图像特征参数的主成分分析的基础上，根据每个特征参数的贡献率大小计算相似系数。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。