When the cation from outside the cell membrane into the cell membrane, the membrane surface polarization in response to retire, so that channel open.

The resultant ionized bond can be cleaved by a hemi-heterolysis process, affording a cation and a neutral radical.

生成的离子化键能由半异裂的过程而开裂，提供一个正离子和一个中性的游离基。

It can stable both of a-carbon cation, ion and radical, so it is an excellent active group in organic reactions.

苯并三氮唑环既可以稳定碳正离子、α-碳碳负离子，又可以稳定α-碳自由基，它是有机化学反应中很好的活化基团。

Protective Effects of Cation A on Free Radical Injury Induced by Endotoxin in Rabbit Blood Circulatory System

内毒素诱生自由基致兔血循环系统损伤及CA对其影响

The signal of a nitrogen-centered radical adduct of DMPO was observed. The results obtained indicate that the trapped radical is a cation radical of diamine produced from diamine and photogenerated hole.

观察到DMPO与氮中心自由基加合物的ESR信号，表明捕捉到的自由基是脂二胺与光生空穴作用而产生的胺的阳离子自由基。

Effect of External Electric Field in Electron Transfer An Ab Initio Calculation for Electron Transfer Between Benzene and Benzene Cation Radical

电子转移的外电场效应&苯分子与苯正离子自由基间电子转移的从头算研究

ESR Study on Stable Cation Radical of a Conjugated Polymer

共轭聚合物中稳定自由基的ESR研究

The relationship of interlayer cation fixation and octahedral structure of secondary minerals is probably different from that of primary minerals.

原生矿物中八面体结构与层间阳离子固定间的关系对次生矿物而言，也许并不一致；

Many factors lead the clay mineral to swell and disperse, it is not only determined the composition and structure of glues on the mineral but also related to the factors of particle surface exchangeable cation ingredient, the dispersion medium nature and son on.

引起粘土矿物膨胀、分散的因素较多，除取决于组成粘上矿物的组分和结构外，还与颗粒表面交换阳离子成分、分散介质性质等有关。

From the results of cation exchange of four components, the exchangeable cation of the red clay is mainly Ca2+, and the total amount of exchangeable cations is lower or much lower than the cation exchange capacity.

从四个盐基的交换结果组成来看，红色黏土的交换性阳离子以交换性Ca2+为主，而且交换性阳离子盐基总量低于或远低于阳离子交换量。

Study on optimal proportion of cation and anion in nutrient solution for cucumber and egg plant Nutrient Accumulations and Changes of Exchangeable Cation Ions in Soils under Sunlight Greenhouse Vegetable Cultivation

黄瓜红茄培养液中阴阳离子比和最适吸收范围日光温室栽培对土壤养分累积及交换性养分含量和比例的影响

The contents of total nitrogen, total phosphorus, content of exchangeable cation ( CEC) and C/ N specific ratio were all improved.

施用有机肥的土壤全氮、全磷、重组磷及C/N比均呈提高趋势，pH值降低，其原土和重组复合体的阳离子交换量较高。

Study on the Response to Growing-power of the European Oak to the Change in Exchangeable Cation in Topsoil

土壤阳离子交换量的变化与欧洲栎生长势的研究

The composition of exchangeable cation and the soil nutrient content can be used as the indexes to evaluate soil chemical fertility evolution, especially the former is more important.

交换性阳离子组成、养分全量及速效含量可作为评价红粘土红壤化学肥力演化的指标。

Effects of Simulated Acid Rain on Exchangeable Cation Transplant and Acidifying Potential in Litchi Orchard Soils

模拟酸雨对果园土壤交换性阳离子迁移及其对土壤酸化的影响

After the key column fails, the internal force is redistributed by the catenary action of the joints to prevent the progressive collapse of structures, while the joints are under the state of bending moment combined with tensional force.

结构体系中当关键柱破坏后，体系将通过节点的悬索作用实现内力的重新分配，防止结构出现连续倒塌，此时节点将承受弯矩和拉力的共同作用。

When the beam undergoes a large deformation, compression force then quickly changes into tension force which supports the beam and reduces further deformation, that is to say, catenary action takes place.

钢梁进入大变形阶段后，轴向约束压力变为轴向约束拉力，轴向拉力有阻止钢梁自身进一步变形的作用，即发生了悬链线作用。

This paper investigates the large deflection behaviour of steel beams under fire conditions taking into consideration the effect of catenary action provided by the surrounding structures.

为了研究高温下钢梁的大变形性能，本文使用ABAQUS有限元程序建立了分析模型。

The fire resistant capacity is enhanced a lot when considering the catenary action of the steel beam.

处于整体结构中的梁的破坏形态与单个构件的梁的破坏形态有较大差别，当考虑梁的悬链线效应时其抗火承载力明显提高。

The cable curves at cable finish stage, which utilizes equal rise of the quadric curve or the catenary curve, bring little difference to static and dynamic behaviors of suspension bridges.

对于空缆状态下的主缆线形，采用矢高相等的二次抛物线型还是采用悬链线线型，对悬索桥的静动力行为产生的差异不大；

The upper-structure of bridge employs catenary curve non-hinge arch.

桥梁上部结构形式定为悬链线无铰拱。