原子键

If there are five or more bonds to a single carbon atoms, it will be short of electrons and have a positive charge - this species is called a carbonium ion, a form of carbocation.

阳碳：如果有五个甚至更多的键连接在一个碳原子上，碳原子由于缺乏电子而带正电，这种物质称为阳碳，这是碳正离子的一种。

Distribution of W and the precipitation mechanism of the B2 phase in the lamellar structure of a TiA1 alloy.

材料的微结构，作为组成材料的大量原子在空间中的排列，本质上是由原子问的相互作用，即化学键决定的。

Bonds between adjacent atoms contribute more significantly than bonds between nonadjacent atoms.

相邻原子间的键比不相邻原子间的贡献大。

Adjacent helical chains are racemic. The Ag atom is linked to two nitrogen atoms of the 2-pyridyl and 4'-pyridyl groups from two different 2,4'-bpy ligands as well as to the oxygen atom of the counterion. In 17 and 19, the adjacent helical chains are linked to wavy two-dimensional network structures by the nitrate counterions.

相邻的螺旋链间是外消旋的，Ag 原子与分别来自两个不同2，4'-联吡啶的2-吡啶基和4'-吡啶基的氮原子以及阴离子的氧原子配位，在配合物17和19中，相邻聚合螺旋链被硝酸根离子桥连接起来，变成了一个波浪形的二维网络结构；配合物18是首次通过无桥连配体支持的Ag ××× Ag键将相邻螺旋链连接成二维非穿插的网络结构。

Triatomic molecules We studied the interaction of linear triatomic molecules CO〓 and CS〓 with the intense femtosecond laser field at different intensities and polarization states. The kinetic energy of the C ion is much less than that of the O ion at the same charge states indicating that the Coulomb explosion is a concerted process, that is, the two C=O broke simultaneously.

三原子分子研究了不同强度的不同偏振的飞秒强激光场和线性三原子分子CO〓和CS〓的相互作用。C离子的平动能要远小于同电荷数的O离子的平动能，表明库仑爆炸是一个协同过程，两个C=O键同时断裂。

The strong adsorption was due to the charge transfer and hybridization between these adsorbates and carbon atom, and due to the formation of chemical bond between them.

引入缺陷后，H，N，O和B容易吸附在碳原子上，与碳原子发生电荷转移，并形成化学键。

The calculational results show that on one hand,the phosphorus atom only affect the bondings of a few atoms of its vicinity,the conductivity increases as the doped concentration increases; while on the other hand ,the doped concentration is higher,the integrity of the diamond lattices are much worse.

计算的结果表明，一方面，磷原子只对它附近的几个原子内的成键有影响，电导率随着掺杂浓度的增加而增加；而另一方面，金刚石晶格的完整性则随着掺杂浓度的增加而降低。

The ligands donate the lone pair electrons to the central metal to form the covalent bondings, called coordination bondings.

配体提供原子对与金属原子形成的共价键称为配位键。

Harmonic frequencies and infrared spectra intensity for these clusters are given in order to aid in the characterization of the ground states. The results show that Si2CmN(m=2-10) clusters form linear structure, which are doublet states. The Si atoms favor to bond at ends of C and N linear chain. The ground state energies of clusters are nearly in proportion to increased m. The stability of Si2CmN(m=2-10) clusters with even m are greater than that with odd m.

结果表明，m=2-10的团簇为线性结构，随着m的增大，团簇的自旋多重度均为2，Si原子在C与N原子形成的线性链端部成键，团簇的基态能量近似线性增大。m为偶数的Si2CmN团簇比m为奇数的更为稳定。

A detailed analysis of the experimental results implied that the attractive forces play a main role in the collisional quenching processes of NCO by the quenchers studied in this work, and for some quenchers, the quenching of NCO is probably controlled by the entrance-channel and might be ascribed to the contribution of chemical reactions.

这一加成过程是一个入口势能面属于纯吸引型的无垒过程，故是NCO+O反应的主要通道。二是O原子攻击NCO分子的O原子得到中间物tran-NCOO，再通过C-O键的断裂生成产物CN+OO。该产物通道由于是吸热的，故很难发生。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。