查询词典 metric coefficient

Measuring the coefficient of dynamic viscosity of 0-60g/l salt water under 10-30℃ by capillary tube viscosimeter, and performing the mathematical regression of coefficient of dynamic viscosity about temperature and concentration in order to realize the influence of temperature and concentration on dynamic viscosity of salt water.

2为了解温度和浓度对咸水粘滞系数的影响，使用品氏毛细管粘度计测定10—30℃下，浓度在0—60g/l之间的咸水的粘滞系数，并对咸水粘滞系数进行了浓度和温度的数学回归

Considering that both the solution of the structure natural vibration frequency and mode as well as its elastic stability coefficient can transform into eigenvalue problem of the structure dynamic equilibrium equation, taking the fundamental frequency and the elastic stability coefficient of the structure as the evaluation criteria, the possible arrangements of Mi-brace and X-brace for halfthrough CFST arch bridge with 360 m span were comparatively analyzed, and the advices for the reasonable space of the Mibrace and the X-brace were advanced.

鉴于结构自振频率、振型及弹性稳定系数的求解均可转化为源自结构动力平衡方程的特征值问题，先以结构基频及弹性稳定系数为衡量标准，对一座360 m跨的中承式钢管混凝土拱桥可能的米字撑及X撑布置方案进行了分析对比，并据此提出了X撑及米字撑的合理间距。

A numerical calculation program is written up for the various solution methods in this paper and the program is being used in various aspects of inverse problem of environmental hydraulics, including inverse problem in reverse process of one-dimensional unstable diffusion, inverse problem in reverse process of convection-diffusion, inverse problem for the dispersion coefficient in water quality model, The inverse problem of coefficient identification for nonlinear Boussinesq equation, parameter identification inverse problem for water quality model, the inversion of parameter of BOD-DO water model, the inverse problem of the source of convection-diffusion, identification of the steady-state permeability for two dimensional isotropic medium, two-dimensional steady inverse problem of convection-diffusion and parameter identification inverse problem for two-dimensional parabolic equation, etc.

对本文提出的各种算法，编制了数值计算程序，并把它应用于环境水力学反问题诸多领域，包括污染物一维非恒定扩散逆过程反问题，对流扩散方程逆过程反问题，河流水质纵向弥散系数反问题，非线性Boussinesq方程反问题，河流水质多参数识别反问题，BOD-DO水质模型参数反演问题，对流—扩散方程源项反问题及二维恒定各向同性介质渗透系数反问题，二维定常对流——扩散方程及二维抛物型方程参数控制反问题等。

Through component score coefficient and percent of variance, the weight of evaluation indexes is gained. The comprehensive index of water quality evaluation can be obtained by the coefficient of weights and standardized values of evaluation indexes, and the samples of water quality can be classified and sorted.

该模型由因子得分系数和方差贡献率确定指标权重，然后以指标权重与各水样相应指标的标准化值进行加权平均得到水质评价的综合指标值，进而对评价样本进行排序和分级。

In this paper, concepts of grey absolute relation coefficient and grey relative relation coefficient are proposed. And a computational formula of grey relation grade is developed, which formes a new theoretical model for analysis of grey relation.

1引言灰色关联分析是灰色系统理论的一个重要内容，它通过参考序列与比较序列各点之间的距离分析来确定各序列之间的差异性和相近性，从而找出各因子之间的影响关系及影响系统行为的主要因子。

New concepts of grey absolute relation coefficient and grey relative relation coefficient are proposed and a new computational formula of grey relation grade is developed, which forms a new theoretical model for analysis of grey relation.

第二章，简述了目前几种常见的灰关联分析模型，指出了这些分析模型存在的不足及其导致不足的原因，然后给出了灰色绝对关联系数及相对关联系数的定义，进而建立了灰色关联分析的新的理论模型。

A data dessimination mechanism based on confidence coefficient Energy of nodes in a WSN is spent mostly on delivering the packets. In order to decrease the number of packets, while not increase the time delay, a model of data dissemination based on confidence coefficient is presented.

4提出了一种基于置信因子的数据分发机制无线传感器网络中节点的能量大部分用来传输数据，为减少数据的传输量，同时不增加数据包的延迟，提出了基于置信因子的数据分发概念，并设计了一种基于置信因子的发送退避策略和传输过滤器。

Confidence coefficient is generated by the nodes based on the data sensed, and represents the authenticity and importance of the data. A backoff algorithm and a transmission filter based on the confidence coefficient have been designed.

本文从理论上分析了路由空洞在规则部署和随机部署情况下的存在概率，导出了随机部署情况下随机建立的路径遭遇到路由空洞的概率，并提出了一种带有退避改进方法的贪婪转发策略。

Confidence coefficient was generated by the node based on the data sensed, and represented the authenticity and importance of the data. A backoff algorithm and a transmission filter based on the confidence coefficient were designed also.

由于置信因子由传感器节点根据所感知的数据产生，反映了数据的真实性和重要性，由于设计了一种基于置信因子的发送退避策略和传输过滤器，解决了保证重要数据的优先信道访问权和减少冗余数据传输量的问题。

First,much basic knowledge is introduced.Then,it importantly introduces my perspective : in this paper the estimations of the parameters and coefficient of contamination for the simple regression model and studied when its response variables are contaminated by another random variable sequence it discusses that the interval estimation of posterior confidence probability of parameters on coefficient of contamination by using the method of Bayes inference.

首先介绍了一些基础知识，然后重点介绍了我所做的工作：讨论简单回归模型中响应变量受到另一随机变量序列污染时，模型参数和污染系数的估计方法。

Listen,point and check your answers.

听，指出并且检查你的答案。

Warming needle is one of effective treatment methods for knee arthralgia aggravated by cold,and it is simple,safety,so it should be developed in clinical acupuncture and moxibustion extensively.

但以本院科针灸门诊在2005年1月—2006年6月期间共收治膝痛患者100余例，经过临床的诊断后，其中施以温针治疗的48例，疗效显著，报道如下。1临床资料本组病例48