二价

Most polysaccharide-protein complexes of bacteria carry negative charge, which can form polar bond, will promote the bacteria attaching to mineral.

由细菌表面的多糖—蛋白质复合物构成的多糖纤维大部分带负电，能与二价阳离子形成极性键，促进细菌吸附至矿物。

It points out that their semantic functions are measured by the action or the time and the space of the central matters with action , and this structure is a method to indicate Chinese predicator number classifier feature , so it is declaration but not reference .

本文主要从语义功能的角度探讨一类二价动词句后面数量短语的句法属性，认为它们主要是对动作行为或者是以动作行为为中心的事件的时间性和空间性的计量，是表示汉语谓词性成分数量特征的一种手段，所以本质上是陈述的，而不是指称的，因此既可以充当补语也可以充当谓语，因其类别不同而导致陈述能力存在强弱之分，这制约其充当补语和谓语的能力。

In a hemagglutination assay, D-Melezitose and Raffinose were the inhibitors of GAL among the sugars tested.

GAL具有较好的热稳定性且其凝血活性不受Ca^2＋、Mg^2＋和Zn^2＋等二价阳离子的影响。

The characteristics not only provide a possibility to separate these different configurations spectrally but also present a importance for directly investigating the properties of hole burning of different configurations.

通过分析荧光的时间特性和利用激发光谱，光谱烧孔等光学手段，首次发现处于不同配位环境的二价钐离子具有差别很大的〓无辐射弛豫速率。

When synapsis is complete the paired chromosomes are referred to as bivalents.

当联会完成的时候，那配成对的染色体叫做二价体。

Synapsis The association of homologous chromosomes during the prophase stage of meiosis that leads to the production of a haploid number of bivalents.

联会：能产生单倍二价体的减数分裂前期，同源染色体的联合现象。

Telophase The final stage in mitosis and meiosis, in which the separated chromatids or homologous chromosomes of bivalents collect at the poles of the spindle and the nuclei of the daughter cells are formed.

细胞分裂的末期：是细胞的有丝分裂和减数分裂的终极阶段。在这个时期内，分离的姐妹染色单体或二价体的同源染色体向纺锤体两极聚拢，同时子代细胞核形成。

Unicolor. There were unequal bivalents, homologous chromosome deconjugation, chromosome brige, unequal separation, laggard chromosomes, chromosome outside nucleus, micronuclei arid so on.

unicolor小孢子母细胞减数分裂异常进行了研究，发现存在不等二价体、同源染色体早分离、染色体桥、不均等分离、滞后染色体、核外染色体、微核等。

Zygotene is characterized by the active and specific pairing of homologous chromosomes leading to the formation of a haploid number of bivalents.

偶线期时，以同源染色体活跃的、特定的配对为特征，形成了单倍数的二价染色体。

At zygotene,t he SC formation initiated at multiple sites in each bivalent but the regions nea r telomeres were preferred.SCs were shortened with development of SCs.Initiation of new SC and extension of existing SC occured simultaneously,and pairing in di fferent bivalents of a nucleus was not synchronised.

结果表明，小麦SC以多点式起始方式于偶线期开始形成；随SC的发育，新的SC形成和已有SC片断的延伸并存；此外，在同一核内不同二价体之间，染色体配对和SC形成并不同步；SC成熟于粗线期，而以破碎方式解体，消失于双线期。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。