查询词典 reversible

Esterification process of a reversible step wereresolved as two irreversible steps,then chemical decomposition of wood components weredecreased in liquid acid catalyst.Experiments showed that crosslinking catalysts took catalysisrole on two process in the esterification,(1)five cyclic anhydrides formed by dehydration ofpolycarboxylic acids,(2)esters occurred by substitution between five cyclic anhydrides andwood.

实验中的反应过程使一般的酯化一步可逆反应，分解为两步不可逆反应，减少了液相酸催化过程的木材组分化学降解；交联反应催化剂对于多元羧酸类化合物与木材组分的酯化反应具有两个过程的催化作用：(1)多元羧酸脱水形成五元环酸酐中间体；(2)木材与五元酸酐中间体亲核取代反应形成酯。

This yellow fatty streak seen in childhood is not necessarily a precursor of adult atherosclerosis and occurs in populations in which atherosclerosis is uncommon; it is presumably reversible at this stage.

孩童时期便可见到的这种黄色脂纹，并不一定是成年后动脉粥样硬化的先兆，若发生在动脉粥样硬化病不常见的人群中，可能在此阶段是可逆转的病变。

Thus, the reaction of methanol with hydroxy group on the surface of zinc oxide surface was reversible.

因此甲醇在氧化锌表面吸附生成甲氧基和水的反应是可逆的。

The reaction of methanol with hydroxy group on the surface of zinc oxide surface was reversible.

因此甲醇在氧化锌表面吸附生成甲氧基和水的反应是可逆的。

The methods of analysis and evaluation of thermodynamics of LiBr-H2O absorption cycles are set up. Firstly, Based on the utilization of The First and Second Law of thermodynamics, the ideal combined Camot Cycle model is set up. Secondly, Aimed at the insufficient of the classical thermodynamics analysis method, the popular method-- Finite Time Thermodynamics analysis is applied to set up the model of endo-reversible combined Carnot cycle. Finally, the optimization relationships between the specific heating load and operating parameters and between SHL and COP are conducted according to the characteristics of the function and investment of AHT.

在首先利用热力学第一、二定律分析方法的基础上，建立了吸收式热变换器的理想联合卡诺循环模型，然后针对经典热力学分析方法的不足，利用了当前很流行的有限时间热力学分析手段，建立了AHT系统内可逆联合卡诺模型，根据热变换器的功能、投资等方面的特点，导出了吸收式热变换器比供热率与操作参数、比供热率与热力学性能系数的优化体系。

The First Law of thermodynamics and exergy analysis method were used to construct factors such as coefficient of performance , exergy efficiency and exergy index according to the AHT combined Carnot cycle model established. Aimed at the insufficient of the classical thermodynamics analysis method, the optimization relationships between the specific heating load and operating parameters, and between SHL and COP, was reasoned out using the Finite Time Thermodynamics method according to the characteristic of investment and capacity of AHT, and endo-reversible combined Carnot cycle model. Hence, the rationality of the energy utilization and the economic index, which related to the total heat transfer area, were both taken into account.

首先利用热力学第一定律分析法和〓分析方法，按照建立的吸收式热变换器理想联合卡诺模型，构建包括性能系数、热力学效率、〓效率、〓指数在内的吸收式热变换器热力学评价体系；然后针对经典热力学分析方法的不足，根据热变换器的功能、投资等方面的特点，按照内可逆联合卡诺模型，利用有限时间热力学理论方法，导出了吸收式热变换器比供热率与操作参数、比供热率与热力学性能系数的优化关系，从而使优化结果兼顾了系统用能的合理性和与总传热面积相关的反映设备投资回报的经济性指标。

Candida albicans expresses several virulence factors that contribute to pathogenesis. These factors include host recognition biomolecules, secreted aspartyl proteases and phospholipases, morphogenesis (the reversible transition between unicellular yeast cells and filamentous, growth forms).

白念珠菌的毒力因子和发病机理有关，主要包括促进白念珠菌粘附于宿主细胞的生物分子，与侵入有关的酶SAP和PL，及其菌相转换(生长状态，可逆的单个酵母细胞和菌丝的转换)。

The value of C_n was larger than that of isotactic PDEA and smaller than that of syndiotactic PDEA,which indicates that the PDEA synthesized by reversible addition-fragmentation chain transferpolymerization method was atactic chain.

其特征比的数值还表明PDEA链的柔性与聚相近。

This com- bination is unstable and quickly rearranges itself into a stabler, but still reversible, substance known as an Amadori product.

这个组件Bination不稳定，迅速重新组合成一个稳定的，但仍可逆，阿马物质称为产物。

Potent, cell permeable, reversible, and selective inhibito r of EGF re ceptor tyrosine kinase a ctivity

有效、细胞渗透、不可逆、选择性的EGFR 酪氨酸激酶活性抑制剂（IC50=450pM）。

Aquatic or marsh-growing fern allies; known to have existed since the Cenozoic; sometimes included in Lycopodiales.

生活于水中或湿地的蕨类；从新生代生存至今；有时归于石松目之中。

The engine was uprated from a 90hp Franklin to a 125hp Lycoming.

改良过的引擎是从90hp到125hp莱康明富兰克林。