查询词典 elasticity of substitution

Inchapt 3,we study construction of the invariant polynomial ring oftrace map associated with substitution.We solve this problem whensubstitution is invertible,give a basic theorem.

第三章研究结合代换的迹映射的不变多项式所形成的环，解决了代换为可逆的情形的环的结构问题，并给出了有关的基本定理。

This complex reaction was phenolic electronic substitution reaction, so reaction rate was related with the positive electricity of pro-electronic reagent, as well as the form of aromatic hydrocarbons. Rates of chlorination of phenol and 2-monochlorophenol were faster in alkaline water than that in weak acid water, so 2,4-dichlorophenol and 2,4,6-trichlorophenol formation concentrations increased with the reaction time.

该复合反应属于酚类电子取代反应，反应速率与亲电子试剂的阳电性以及芳香烃的形式有关，碱性水环境中氯取代苯酚和2-一氯酚的速率要快于在弱酸性水环境；随着pH的升高，2，4-DCP和2，4，6-TCP的生成浓度也不断增加。

Following a quick upturn in the immediate post-independence period until the 1960s, when the dominant industrial policy was that of import substitution, it went into a decline until almost 1985 as market forces were not being allowed to operate and the entire policy had become very restrictive and stifling.

Following直到60年代，在刚刚结束的快速回升，独立时期占主导地位的产业政策是，进口替代，它成为一个几乎下降到1985年为止，市场的力量没有得到获准开办和整个政策已变得非常严格和扼杀。

Based on the power series expansion of the general flexible matrix of the sub-system, a general expression of the dynamic stiffness matrix of the reduced model was derived from the exact expression of the reduced model for the direct substitution dynamic condensation methods. The general expression was also expressed as a power series of the unknown eigenvalues. After that, the validity and error of the Guyan condensation method were analyzed.

对于动力缩聚直接代入法，本文从降阶模型的精确表达式出发，利用子系统广义柔度矩阵的幂级数展开式，导出了降阶模型动刚度矩阵的一般表达，并把它表示为未知特征值的幂级数形式，在此基础上对 Guyan缩聚法的适用范围和误差进行了一般分析。

The infrared spectra data in substitution of praseodymium for Yttrium in 123 system are similar to that in the decreasing of oxygen content in the YBCO system and the disappeared optical modes can reappear when the content of Pr increases.

Pr的加入类似于在YBCO中脱氧的作用，也能使消失的光学活性模重新显现。

Furthermore, various kinds of approximate matching errors (insertion, deletion, substitution, transposition) can be detected with different structures of rule combination unit. A probability model of packet matched is also proposed for large alphabet environment, which proves that the hardware scheme is practicable.

该并行模型有如下特点：①通过采用不同的规则组合器可完成插入、删除、替代和交换错误的近似匹配；②通过配置参数，可灵活控制近似匹配的程度；③可直接应用於大字符集语言下的纲络内容流分类；④针对中文环境做了概率建模，分析了并行硬件模型对纲络分组的匹配概率，证明该模型在一般情况下具有较好的可应用性。

Note:"Do so" is used to substitute "help him".Note:"She" is a pronominal substitution.

英译汉中重译法有如下三个作用：一是为了明确；二是为了强调；三是为了生动。

The substitution of oxygen for carbon dioxide in the atmosphere, which occurred in the Proterozoic, caused probably by cyanobacteria in the form of stromatolites, caused changes leading to the evolution of aerobic organisms.

发生在原生代的大气中氧气取代二氧化碳，可能是由藻青菌在叠层结构上造成的；大气改变引发的变化，导致了好氧生物的发展进化。

Firstly,starting from 2,2-dimethyl-1,3-propan-diol,synthesis of-pedamide was finished in 17 steps.The pyran ring was formed in a S_N2 substitution of hydroxyl and epoxide.

以新戊二醇为起始原料，通过基于分子内的羟基与环氧的S_N2亲核取代构筑吡喃环的方法，经过17步反应完成了外消旋的Pedamide的合成。

Kdr resistance and determination of frequences of kdr gene in house fly field population L1014F is the most common amino acid substitution in the kdr allele. The frequency of the L1014F kdr allele was determined by the method of PASA in fourteen field populations of houseflies with resistance factors at LD〓 for pyrethrin/ piperonyl butoxide and bioresmethrin/piperonyl butoxide from 4 to 29 and 2 to 98, respectively.

击倒抗性及kdr基因频率在家蝇野生种群中的检测 L1014F是击倒抗性等位基因最常见的突变位点。14个家蝇种群对除虫菊酯／胡椒基丁醚和苄呋菊酯／胡椒基丁醚的LD〓抗性倍数分别为4到29和2至98。

You can snipe the second and third union leaders from this position.

您可以鹬第二和第三工会领袖从这一立场出发。

Aiming at the currently shortage of XML streams quality detecting, this paper proposes a new forecasting method of XML streams quality by least squares support vector machines, which is used the method of XML keys' vector matrix as windows, and vector product wavelet transform to multilevel decompose and refactor the XML streams series, that can fulfill real-time checking demand of XML quality, and ensure constraint, consist- ency and integrality. For even more adapting net load, it proposes a control strategy by weight and adaptive adjustment to ensure XML streams quality.

针对当前XML数据流质量检测存在的不足，提出构建XML键的矢量矩阵作为窗口，利用矢量积小波变换多级分解与重构XML数据流，再结合最小二乘支持向量机对XML数据流质量进行预测的一种方法，满足XML数据流质量重构时实时检测的要求，保证XML数据的约束性、一致性与完整性；为了更好的适应网络负载，采取加权与自适应窗口调整等调度策略充分保证XML数据流的质量检测。