查询词典 the atom

The results show: the strongest bond is the Al-Al bond in the segregated cell without containing vacancy, where the Al atomic covalence radius is greater than that of Li atom in the cell; while the strongest bond is the Al-Li bond in the segregated cell containing vacancy, and the Al atomic covalence radius in the cell is less than that of Li atom. Since the difference of electronagativity between the Al and Li atoms is obvious, it is inclined to formed the Al-Li segregated cell of short range order structure in the condition of vacancy present. The short range order structure containing vacancy is probably the embryo or precursor structure of the metastable phase δ′(Al3Li). Because the strongest covalent bond in the Al-Li-vacancy segregated cell in alloy formed in quenching is the main strength reason for supersaturated solid solution of alloy. The bond net of succeeding precipitation of δ′(Al3Li) has the picture of anisotropic Al-Al bonding and the bond intensity enhanced. Since the δ′(Al3Li) is coherence with matrix, the bond net strength is enhanced by the precipitation of δ′(Al3Li) and so strengthen the alloy.

计算结果表明：不包含空位的偏聚晶胞的键络最强键为Al—Al键，其中Al原子的共价半径较Li原子的共价半径要大；而含空位的偏聚晶胞的最强键为Al—Li键， Al原子的共价半径要比Li原子的共价半径要小；在空位存在的情况下，由于Al原子与Li原子的电负性相差明显，促使Al和Li原子结合，倾向形成Al-Li短程序结构偏聚区，这种含空位的短程序结构很可能就是δ′(Al3Li)亚稳相的前兆结构和生长胚胎；由于Al-Li-空位有序偏聚晶胞的Al—Li键络比基体键络要强许多，因此，淬火过程中合金生成的Al-Li-空位偏聚晶胞对合金过饱和固溶体起主要强化作用；后续析出的δ′(Al3Li)亚稳相键络各项异性显著，键络强度明显提高；由于Al3Li与基体共格，其大量均匀弥散析出起到提升基体整体键络强度，同样对合金产生强化作用。

The results show: the strongest bond is the Al-Al bond in the segregated cell without containing vacancy, where the Al atomic covalence radius is greater than that of Li atom in the cell; while the strongest bond is the Al-Li bond in the segregated cell containing vacancy, and the Al atomic covalence radius in the cell is less than that of Li atom. Since the difference of electronagativity between the Al and Li atoms is obvious, it is inclined to formed the Al-Li segregated cell of short range order structure in the condition of vacancy present. The short range order structure containing vacancy is probably the embryo or precursor structure of the metastable phase δ'(Al3Li). Because the strongest covalent bond in the Al-Li-vacancy segregated cell in alloy formed in quenching is the main strength reason for supersaturated solid solution of alloy. The bond net of succeeding precipitation of δ'(Al3Li) has the picture of anisotropic Al-Al bonding and the bond intensity enhanced. Since the δ'(Al3Li) is coherence with matrix, the bond net strength is enhanced by the precipitation of δ'(Al3Li) and so strengthen the alloy.

计算结果表明：不包含空位的偏聚晶胞的键络最强键为Al-Al键，其中Al原子的共价半径较Li原子的共价半径要大；而含空位的偏聚晶胞的最强键为Al-Li键，Al原子的共价半径要比Li原子的共价半径要小；在空位存在的情况下，由於Al原子与Li原子的电负性相差明显，促使Al和Li原子结合，倾向形成Al-Li短程序结构偏聚区，这种含空位的短程序结构很可能就是δ'(Al3Li)亚稳相的前兆结构和生长胚胎；由於Al-Li-空位有序偏聚晶胞的Al-Li键络比基体键络要强许多，因此，淬火过程中合金生成的Al-Li-空位偏聚晶胞对合金过饱和固溶体起主要强化作用；后续析出的δ'(Al3Li)亚稳相键络各项异性显著，键络强度明显提高；由於Al3Li与基体共格，其大量均匀弥散析出起到提升基体整体键络强度，同样对合金产生强化作用。

It analyzes the influence of the time-frequency properties of atom clock on time-keeping error by quantity, and estimates the error of related physical measure caused by the time-keeping properties of atom time-frequency criterion-time resolution.

定量分析了原子钟的时间频率特性产生的守时时差，估算了原子时频标准的守时时差对有关物理量测量所产生的影响。

A united atom topology building block is generated from the all atom topology building block by (1) collapsing the charges on the non-polar hydrogen atoms onto the heavy atoms to which they are attached,(2) introducing improper dihedrals to maintain chirality,(3) regenerating exclusion lists and (4) reassigning atoms types as required.

联合原子拓扑 building block 产生通过全原子拓扑 building block 。（1）压平非极性氢原子上的电荷到重原子上（2）介绍不合适的二面角到主要手性（3）重新产生排除目录（4）再分配原子类型

In classicaIn classical hydrogen atom model an electron is circling around the nucleus like Earth revolving around the sun, except that the force between the l hydrogen atom model an electron is circling around the nucleus like Earth revolving around the sun, except that the force between the two electron

在经典的氢原子模型里，电子绕着原子核作圆周运动，在经典的氢原子模型里，电子绕著原子核作圆周运动，就象地球绕太阳运动一样就就像像地球绕太阳运动一样地球绕太阳运动一样，，只只是前者的是前者的而其引力来自电场。

Predicted frequencies of the metal-bound CO,QM/MM-optimized geometries,and calculated redox potentials of the FeMocofactor with different central ligands show that the oxygen atom is the candidatefor the interstitial atom.

5预测了CO脱氢酶活性簇不同氧化-还原态C_(red1，C_(red2)和C_的结构特征和酶催化CO氧化成CO_2的反应机理。

Predicted frequencies of the metal-bound CO,QM/MM-optimized geometries,and calculated redox potentials of the FeMocofactor with different central ligands show that the oxygen atom is the candidatefor the interstitial atom.

计算表明，C簇周围的氢键网络主要由保守残基His93，His96，Glu299，Lys563和四个水分子组成，该氢键网络在稳定中间体和调控质子转移的过程中，起着重要的作用。

A formula contains the symbols of the kinds of atom in the each molecule and subscripts that indicate the number of each kind of atom in the molecule.

分子式中含有原子符号，下标的数字表示分子中每种原子的数量。

Under an appropriate condition, the squeezed vacuum field can trap the two atoms inri.An analytical expression of emission spectrum for three-level atom interacted with two-mode cavity field is given. The effects of the initial state of system on the emission spectrum for three-level atom are explored.

我们给出了好腔中与双模腔场相互作用的三能级原子发射谱的一般表达式，探讨了系统初态对三能级原子发射谱的影响，阐明了只有原子和双模驱动场初始时刻均处于相干叠加态，原子不同跃迁通道间的量子干涉才使得原子发射谱呈现相位敏感性。

At the same time, we studied the influence of quantum interference on the squeezing spectrum of the resonance fluorescence emitted from a V-type three-level atom and a -type four-level atom which are driven by coherent fields. We showed that quantum interference can greatly enhance squeezing in the components of phase quadratures at atomic frequency and change the squeezing spectrum .

同时，我们还研究了量子干涉对V型三能级和型四能级原子共振荧光压缩谱的影响，结果表明，量子干涉可显著加强原子跃迁频率分量的相位压缩效应和改变压缩谱的形状。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。