查询词典 stable equilibrium

1H NMR spectroscopic analysis of aromatic protons combined with theoretical analysis of molecular structures proved the existence of two rotational isomers at 300 K, as well as a rapid interconversion equilibrium at 330 K for both compounds Ⅰ and Ⅱ. However, only one conformer exists for compound Ⅲ and puerarin containing 7-phenolic hydroxyl instead of propyl in A-ring as the case of compounds Ⅰ and Ⅱ. Based on UV-Visible absorption data of neutral and basic solutions, and on the density function calculations, the 7-phenolic hydroxyl group in A-ring was found to be more acidic than the 4'-phenolic hydroxyl group in B-ring. The mechanism of derivation reaction and the structure-reactivity relationship of puerarin as an antioxidant were further discussed.

其中7-丙基葛根素Ⅱ属于新型取代衍生物；变温1H NMR和理论计算结果表明，在300 K时，葛根素和4'-丙基葛根素以单一构型存在；而7，4'-二丙基葛根素和7-丙基葛根素则存在两种核磁可分辨的旋转异构体，当温度升至330 K时，两种异构体可以相互转化；通过对比分析葛根素及其衍生物脱质子产物的紫外可见吸收光谱并结合理论计算，确定了A环上7位酚羟基比B环上4'位酚羟基先脱去质子，并由此进一步阐明了葛根素衍生化反应机理以及在抗氧化作用中可能的活性位点和结构活性关系。

Finally, ecological perspective of non-equilibrium of subalpine conifer forest was introduced and the author's opinions were given.

在群落和生态系统中强调环境的随机作用

An excessive demand or supply in one market could consequentially influence the equilibrium of demand and supply in another market,which brought about the disequilibrium of demand and supply of the whole market system.

一个市场的过度需求或过度供给必然会影响另一个市场中的需求和供给的均衡，从而引起整个市场体系的需求与供给的非均衡。

In this paper, it includes several parts as follows: Based on the conservation laws of mass and momentum equilibrium in transient liquid pipe flow, the basic equations are introduced in detail.

本文主要从以下几个方面进行了研究：从连续介质理论的质量守恒和动量守恒原理出发，介绍液体管道瞬变分析的基本方程组即波动方程组的详细推导过程。

By the law of conservation of mass and the principle of effective stress as well as the equilibrium differential equation, an anisotropic coupled model for the analysis of groundwater seepage and stress is developed.

根据质量守恒定律、有效应力原理、以及土的平衡微分方程建立了各向异性渗流场与应力场的耦合分析的数学模型。

With the modernization of scientific and technological progress and industrial development, physics, chemistry, biology, engineering, aerospace, medical, economic and financial areas of the many principles and laws can be described as an appropriate ordinary differential equations, such as Newton's laws of motion, gravity law, law of conservation of mechanical energy, energy conservation law, the law of population development, ecological population competition, disease transmission, genetic variation, the trend of the stock's up V, the floating interest rates, the market equilibrium price changes.

随着科技进步和工业现代化的发展，物理、化学、生物、工程、航空航天、医学、经济和金融领域中的许多原理和规律都可以描述成适当的常微分方程，如牛顿的运动定律、万有引力定律、机械能守恒定律，能量守恒定律、人口发展规律、生态种群竞争、疾病传染、遗传基因变异、股票的涨伏趋势、利率的浮动、市场均衡价格的变化等。

The consigner designs a contract in order to maximize their benefits under the conditions of restriction and compatible restriction of encouragement. This contract is the result of game and Nash equilibrium.

委托人在参与约束和激励相容约束条件下设计一个契约实现自己利益的最大化，而这个契约是双方协商的结果，是一个纳什均衡。

During this process, the calculation of equilibrium const K is a key point.

北京100083在油气藏的组分模型中，需要进行大量的相平衡计算。

When a body is at rest, or in motion with constant velocity , the external force acting upon it are in equilibrium.

当物体处于静止或作匀速运动时，作用在其上的外力是平衡的。

The neo-classical growth theory uses it to study growth under constant return to scale, whereas the classical economic development theory takes a descriptive approach to look into virtually all the issues in economic development. The new growth theory uses dynamic general equilibrium theory to study growth under increasing return to scale. The formalized economic development theory uses it to analyze economic development.

新古典经济增长理论只是用动态一般均衡理论研究了规模报酬不变条件下的经济增长；而古典经济发展理论则用描述性分析方法研究了几乎全部的经济发展问题；新增长理论用动态一般均衡理论分析了规模报酬递增条件的经济增长；形式化的经济发展理论则用动态一般均衡理论分析了经济发展问题。

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。