查询词典 dynamical variables

Those variables for which it holds (e.g., momentum and position, or energy and time) are canonically conjugate variables in classical physics.

那些具有的变量(如动量与位置，或能量与时间)是经典力学里的正则共轭变量。

First, a chlorinator was self-designed in this paper, and dichloride of 2-methyl-1-propene was synthesized by 2-methyl-1-propene reacted with chlorine fast in this reactor. By means of the Orthogonal Experiments design and single factor experiments, the influence of several reaction variables on the yield were examined and the optimum reaction conditions under the intervallic operation were obtained, the yield and selectivity of dichloride of 2-methyl-1-prop-ene were more than 65% and 80% respectively. Second, the preparation of 2-methylene-1, 3-propanediol, which dichloride of 2-methyl-1-propene reacted with alkali was investigated. By means of the Orthogonal Experiments design and single factor experiments, the influence of several reaction variables on the yield were examined and the optimum reaction conditions under the intervallic operation were obtained, the conversion of dichloride of 2-methyl-1-propene was 100%. Moreover the preparation of MPO, which 2-methylene-1, 3-propanediol reacted with hydrogen, in presence of Al_2O_3-Pd catalyst, was gotten, and the product was appraised.

本文在氯化反应过程中，自行设计制作出了氯化管式反应器，在该反应器中异丁烯和氯气迅速混合反应生成二氯异丁烯，根据该氯化反应特征利用正交试验和单因素试验考察了有关因素的影响并优化得到了最佳工艺条件，二氯异丁烯的总收率达65％以上，选择性达80％；接着，对二氯异丁烯进行水解反应制得了2-甲烯-1，3-丙二醇，讨论了相关因素对水解反应的影响，并通过正交试验和单因素试验得到了较佳工艺条件，二氯异丁烯的转化率达100％；同时还对制备的2-甲烯-1，3-丙二醇在常压下采用三氧化二铝负载钯催化剂催化加氢得目的产物MPO，并对产品进行了鉴定，从而打通了整个工艺路线。

During the data processing, FA is applied to extract the characteristics of secondary variables and eliminate the collinearity among these variables.

针对某丙酮精制过程，提出采用FA 与SVR 相结合的方法建立丙酮产品质量的软测量模型。

The purposes of this study were:(1) to explore the relationship among students' cognitive and conation variables,(2) to explore the effect of cognitive/conation variables on students' learning performance, and (3) to group observations into clusters by cognitive/conation components.

本研究的目的如下：(1)了解四个认知成份变项与四个意动成份变项之关系。(2)探讨八个认知╱意动成份变项对国中学习表现的预测力。(3)探讨认知╱意动成份是否能将受试者区分成明显的集群。

Using GARCH（ 1,1 ） model with dummy variables in return equation and modified GARCH（ 1,1 ） model with dummy variables in conditional variance equation, the writer of this paper conducts an empirical investigation into the day-of-the-week effect on returns and volatility in open-end fund during the period of June 1,2003 and August 18, 2005 in China respectively.

运用均值方程含有虚拟变量的GARCH（1，1）模型和条件方差方程含有虚拟变量的修正的GARCH（1，1）模型，我们分别对2003年6月1日至2005年8月18日期间中国开放式基金收益的周内效应和收益波动性的周内效应进行实证研究，结果显示，在研究期间内样本基金收益及收益的波动性在周三这一天显著不同于其他交易日，即存在"周三效应"。

The techniques of computing the domain of convergence and sum function and expanding functions in several variables to power series of functions in several variables are mainly discussed by many examples.

引入了多元函数项级数的概念，给出了其收敛域及和函数的定义；通过详实的例子讨论了多元幂级数的收敛域、和函数及多元函数展开为多元幂级数的计算方法。

These theorists are "variable – analytic" in that they attempt to catalog important cognitive variables and show ways in which these variables are correlated.

这些理论是"变量-分析"，因为他们试图目录重要的认知变量，并显示如何使这些变量是相关的。

A p-value for the Pearson Product Moment Correlation smaller than 0.05 means the two variables are correlated; higher than 0.05 means variables are independent of each other.

皮尔逊积差相关的p值小于0.05意味着两个变量之间是相关的；p值高于0.05则意味着两个变量之间是不相关的。

Canonical correlation analysis also indicated that forest community structure variables were correlated significantly with light factors, and both were interacted with each other and correlated well with PCNM variables.

典型相关分析结果表明群落结构因子和光因子相关性显著，两者都与PCNM变量极显著相关且相互影响，表明群落结构和光因子都表现出显著的空间结构。

The true default risk depends on a number of variables which none of the market participants can observe directly. Furthermore, many of these hidden variables maybe correlated across obligors.

在此模型中，投资者仅有负债人违约风险真正大小的不完全信息，而真正的违约风险依赖于一系列不可观测的随机变量，并且这些变量在负债人之间是相关的。

Who? I never heard of him, Paul said, before asking teammate James Posey if he had heard of him.

赛后，科比说，他一直都是一名非常出色的射手，今天他打得很棒。

When I joined the company, I rotated around the different sections.

我加入这个公司时，轮换过几个不同的部门。