查询词典 atom

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。

For the oxidation channel from OH group migration to O atom insertion,the activation energy barriers for OH migration are 58.4,65.3, and 79.2 kcal/mol,respectively,whereas those for O atom insertions beginning with directly destroying Si_a-Si_s backbonds by a foreign H_2O molecule are much lower,the respective values are 19.0,16.7,and 24.8 kcal/mol.

对于先经过OH迁移致使O原子插入Si_a-Si_s backbond的氧化途径，OH迁移所克服的能垒依次为58.4、65.3和79.2 kcal/mol，而H_2O以O原子进攻Si_a位来打开Si_a-Si_s键进而使O原子插入的能垒则相对较低，仅为19.0、16.7和24.8 kcal/mol。

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。

With the experimental realization of Bose-Einstein condensation and the fast development of the studies on nonlinear effects in BEC atomic matter waves, a new branch of atom optics,＂nonlinear atom optics＂, had been formed, and has been obtained a series of significant experimental progresses.

随着玻色-爱因斯坦凝聚的实现及其非线性效应研究的快速发展，原子光学的一门新兴分支学科——&非线性原子光学&已初步形成，并取得了一系列重大的实验进展。

Planck's Theory of Blackbody Radiation, The Photoelectric Effect, The Compton Effect, Matter Waves, Different Models of the Atom, Schrodinger's Theory of Quantum Mechanics, Time Independent Schrodinger Equations for Simple Examples, Time Independent Schrodinger Equations for Hydrogen Atom, The Stern-Gerlach Experiment, The Spin-Orbit Interaction, The Zeeman Effect, Multielectron Atoms, Molecules.

量子物理( S0312)(3，3)普朗克的黑体辐射理论，光电效应，康普吞效应，物质波，原子的各种模型，薛丁格的量子力学理论，薛丁格方程式-简单例题，薛丁格方程式-氢原子，斯特恩和格拉赫实验，自旋和轨道交互作用，塞曼效应，多电子的原子，分子。

In particular, we discuss the distinct difference between the spectra of one-atom and two-atom mazers.

对单原子情况我们分别计算了热原子与超冷原子两种极限情况，并进行了比较和讨论。

According to these results we discuss the approximate analytical expressions for the spectra of one-atom and two-atom mazers, respectively.

首先，我们建立了多原子微激射器模型，推导出了腔场主方程和光谱的本征值表示，并且在超冷原子极限下对单原子与二原子情况作了解析讨论，从理论上分析了它们之间差异。

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。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。