簇

Also it makes improvements in fault-tolerant and haleness, compared with LEACH-C.Sensor nodes always break down due to hardware failure and disturb from outer environment.

传感器节点由于硬件缺陷和外部环境的干扰而在实际应用中经常失效，已有的容错层次路由协议CRAM协议采用多节点轮换作簇头达到容错的目标。

Furthermore, hemocyanin appeared two subunit with Mr of 75 kDa and 73 kDa, respectively, of which only the protein with 75 kDa was documented to be positive. The hemocyanin subunit with 75 kDa probably shares similar epitopes or homologous motifs with human Ig.

进一步研究显示，血蓝蛋白表现为相对分子质量分别为75kDa和73kDa的两个亚基，其中75kDa亚基与抗人IgG呈显著阳性，表明，血蓝蛋白75kDa亚基与人Ig存在相似的抗原决定簇或高度同源的同源区域。

It presents the spiritual nick keeping the writer s soul from the thousands years Han culture, which he gains a kind of substitute satisfaction learning in order to use through writing for people, as well as he gains a sort of the heroical mind that"I must be useful naturally"by speaking for people.

摘 要：冯伟林的散文集《谁与历史同行》对湖湘文化之内部风景和英雄符簇的深层模式进行重读和自省，反映了数千年儒汉文化在作家心灵深处留下的精神刻痕：通过"立言"获得一种"学以致用"的替代性满足；通过"代言"获得一种"天生我材必有用"的英雄自期心理。

Pike protein consists of S1 and S2 subunit. S1 is head and S2 is rod-shape part, intermolecular effort can bind each other. S1 can bind with host cell epimembranal acceptor. S2 can fix integral Spike protein on the cellular membrane and mediate cell-fusion with virus and host cell. There are significant antigen determinant of virus in Spike protein, genic heterogenesis can effect viral pathogenicity. SARS-CoV Spike protein, which has 23 pieces larvaceous glycosylation sit, consists of 1256 amino acid. Its N-terminals and C-terminals is corresponding conservative.

蛋白是I型膜糖蛋白，介导病毒与宿主细胞膜上的受体结合并与宿主细胞膜相融合。S蛋白由S1和S2两个亚基组成。S1形成球状部分，S2形成棒状部分，两者之间通过分子间的作用力相互结合。S1能与宿主细胞上的受体结合，S2可把整个S蛋白固定在细胞膜上，并介导病毒包膜与宿主细胞膜融合。S蛋白上有重要的病毒抗原决定簇，S基因的突变会影响病毒的致病性。

Geometries of two-dimentional hexagonal net and one-dimentional chain of C36 polymers were optemized by using PM3 and B3LYP/6-31G method. Their electronic structure and stability were also discussed . Band structure were calculated at ab initio level . Compered to the solo C36 molecular ,the results indicated that C36 unit"s structure in the polymers changed obviously and the polymerization increased the system"s stabilities .

本文在系统总结具有纳米尺度的碳团簇研究现状的基础上，着重开展了如下四方面的工作：首先采用PM3和B3LYP／6-31G方法对2D六方网状，以及1D链状C36聚合体的构型进行全优化，探讨了其电子结构和稳定性；并在从头算水平上计算了相应的能带结构。

With the increase of the number of HCN/HNC, the stabilities of ionic clusters M 〓/M 〓 are decreased, and relative binding energies are reduced.

随着HCN/HNC缔合数目的增多，它们与金属离子反应形成团簇离子的稳定性逐渐下降，相对结合能逐渐降低。

Simplicial homology group; topological invariant; homotopy type invariant; degree distribution; clustering coefficient; average distance; simplicial complex; triangulation; complex network; orientability

基础科学，数学，几何、拓扑单纯同调群；拓扑不变量；伦型不变量；度分布；簇系数；平均距离；单纯复形；三角剖分；复杂网络；定向

The recent growing up of chemistry of hydrogenases, especially the Fe-only hydrogenase have renewed interest in classical organometallic diiron dithiolate complexes.

近几年发展起来的氢化酶化学，尤其是唯铁氢化酶活性中心的化学模拟研究，把铁硫簇化学的研究推向了又一高潮。

The charge distribution of H3O＋(H2O)6VIa has also been analyzed, indicating that the strength of H-bonds of the first solvation shell with the hydronium ion is stronger than that with the second solvation shell.

对H3O＋(H2O)6VIa团簇的ABEEM电荷分布进行分析，表明第一水合层水分子与水合氢离子之间的氢键相互作用要明显强于与第二水层水分子的氢键相互作用。

A high level ab initio method and an ABEEM/MM model had been applied to study the hydronium ion clusters H3O＋(H2O)n (n＝1～6). The low energy geometries had been optimized and the binding energy and the stability had been discussed, revealing the preponderant existence of the local structure of the H3O＋(H2O)3 cluster.

应用高水平的从头计算方法和ABEEM/MM模型，研究了水合氢离子团簇H3O＋(H2O)n (n＝1～6)，优化得到了低能构象，探讨了其结合能和稳定性，显示出H3O＋(H2O)3局域结构的优势存在。

We have no common name for a mime of Sophron or Xenarchus and a Socratic Conversation; and we should still be without one even if the imitation in the two instances were in trimeters or elegiacs or some other kind of verse--though it is the way with people to tack on 'poet' to the name of a metre, and talk of elegiac-poets and epic-poets, thinking that they call them poets not by reason of the imitative nature of their work, but indiscriminately by reason of the metre they write in.

索夫农 、森那库斯和苏格拉底式的对话采用的模仿没有一个公共的名称；三音步诗、挽歌体或其他类型的诗的模仿也没有——人们把&诗人&这一名词和格律名称结合到一起，称之为挽歌体诗人或者史诗诗人，他们被称为诗人，似乎只是因为遵守格律写作，而非他们作品的模仿本质。

The relationship between communicative competence and grammar teaching should be that of the ends and the means.

交际能力和语法的关系应该是目标与途径的关系。