atom ['ætəm]

atom的基本解释

n.

原子, 微粒, 微量

• There's not an atom of truth in what he said.
• 他所说的没有一点是真话。

• He couldn't produce an atom of evidence.
• 他一点证据也拿不出。

atom所属的单词分类

Science / 科学 [182]

xenobiology  ·  materials science  ·  genomics  ·  evolutionary biology  ·  earth sciences  ·  Petri dish  ·  volumetric flask  ·  organic chemistry  ·  molecular biology  ·  exobiology

与atom相关的网络例句 [注：此内容来源于网络，仅供参考]

This invention relates to a method and device for generating cold atomic beam. Said method includes heating hot atom source in vacuum chamber to form atomic saturated vapor pressure atmosphere, cooling hot atom by three-D MOT to below 200uk and trapped to form cold atomic cloud, by the quarter wave plate reflection mirror in MOT the laser radiation pressure being unbalanced to make cold atom emitting along said direction, four tape arranged straight line set with contrary current direction is set in atom beam emission direction, which makes the atom emitted to forward to obtain cold atom beam with low speed, large flux and small transverse speed, laser beam vertical with atom beam set in the direction of cold atom emitting for atom beam state preparation to realize state concordant emitted cold atom beam.

本发明涉及一种冷原子束产生方法和装置，该方法包括在抽真空的真空室内，加热热原子源，在真空室中形成相应的原子饱和蒸汽压气氛；采用三维MOT对热原子进行冷却，冷却到200μk以下，并被捕获形成冷原子云团；通过三维MOT中开小孔的四分之一波片反射镜，而使得在该方向上激光辐射压力不平衡，使冷原子沿此方向出射；在冷原子束出射方向上，还置有载有彼此电流方向相反的四根成锥形排列的直导线，从而原子出射时将在磁场的作用下，不会沿横向膨胀而向前射出；便得到了出射速度低的、通量较大的、横向速度非常小的连续冷原子束；同时在冷原子束的出射方向上，设置有与原子束垂直的激光束，用于原子束的态制备，实现态一致的出射冷原子束。

In this paper, the current states of research about the basic theory of harmonic oscillator and hydrogen atom in quantum mechanics are firstly reviewed. On base of it, and the relationships between harmonic oscillator and hydrogen atom in quantum mechanics are studied. By use of the relationships between the hermite polynomial and the laguerre polynomial, the eigenequations of one-dimensional harmonic oscillator and hydrogen atom are conversed into the same equations in form. Therefore the relationships between energy levels and wave functions of one-dimensional harmonic oscillator and hydrogen atom are found. Through the coordinates transform, the relationships between energy levels and wave functions of two-dimensional harmonic oscillator and hydrogen atom are found.

首先综述了谐振子与氢原子的基本理论的研究现状，并在此基础上对谐振子与氢原子的关系展开了研究，通过厄密特方程与拉盖尔方程的相互转化，将一维谐振子与一维氢原子的本征值方程转化为相同形式的方程，从而比较得出它们能量及波函数间的关系，并通过坐标变换将直角坐标系下二维氢原子的本征值方程转化成与曲线坐标系下二维谐振子的本征值方程相同的形式，从而得出二维氢原子与二维谐振子的能量及波函数的关系。

Unfortunately, it has been shownthat these methods are not suitable to study about chemical bonds due to not involvingchemical bonds. In order to consider chemical bonds obviously, we have proposed an atom-bondelectronegativity equalization model on the basis of density-functionaltheory and electronegativity equalization principle. The main contents of our atom-bond electronegativity equalization model contain:(1)Considering the fact that there are varies of chemical bonds in molecules andpartitioning the molecular electron density as summations of atomic electron densitiesand chemical bond's electron densities, we obtained the basic equations of atom-bondelectronegativity equalization model: the expression of the total energy 〓, theexpression of the atom electronegativity 〓 and the expression of the bondelectronegativity 〓.

为了明确地考虑和处理分子中存在的化学键，以便能够更好地描述体系中的电荷分布进而准确地描述分子体系中的有关物理化学性质，尤其是与化学键有关的物理化学性质，我们在密度泛函理论和电负性均衡原理基础上提出了原子-键电负性均衡模型，原子-键电负性均衡模型的主要内容是：(1)考虑到分子体系中存在各种化学键这个事实，将分子空间看成是由原子区和化学键区组成的，将分子的单电子密度表达成为分子中各组成原子的单电子密度和各化学键的单电子密度的加和，从而得到了原子-键电负性均衡模型的基本方程：分子体系总能量〓和分子中原子电负性〓和化学键电负性〓表达式。

与atom相关的网络解释 [注：此内容来源于网络，仅供参考]

atom：原子

卢瑟福的这一发现以及相关的内容着实否定了 "原子不可分" 的观点,不过从构词法的角度来讲,"原子" (atom) 确实不可分. Atom 源自希腊语 τομο (átomos),a 表示 not,tomos 就是 divisible,连起来 atomos 表示的就是 non-divisible,

atom：凌动

2008年3月3日,英特尔发布了历史上最小的、功耗最低的处理器--"凌动"(Atom),并表示"凌动"家族是专门为移动互联网设备(即MID,Mobile Internet Device. MID的概念是由英特尔提出,是介于笔记本电脑和手机之间的新产品形态,

atom：原子俠

卡卡里奥斯最喜欢的一个漫画故事就坦然拿这种"作弊"开玩笑:"有这样一个情节,原子侠(Atom)和同伴缩小到亚原子尺寸,两人坐在一个电子上. "原子侠的同伴问:"我们现在比氧原子还小,我们是怎么呼吸的?"原子侠回答:"我也一直没想明白. "

atom：阿童木

他的鼓手、同时也是女朋友的石璐有着自己的独特艺名--"阿童木"(Atom). 陌生人经常诧异,外表小巧可爱,长着张娃娃脸的她很难与摇滚乐队鼓手联系起来,她敲鼓的气势和技术更会令人震惊. 表现出色的石璐曾被" 挂在盒子上 ( 听歌 ) "看中,

atom：abbr. automatic transmission of mail; 邮件自动传输