atom
英 [ˈætəm]
美 [ˈætəm]
n. 原子
复数：atoms
Oxford 3000 / Collins.2 / BNC.4241 / COCA.5184
牛津词典
noun
- 原子
the smallest part of a chemical element that can take part in a chemical reaction- the splitting of the atom
原子的分裂 - Two atoms of hydrogen combine with one atom of oxygen to form a molecule of water.
两个氢原子和一个氧原子结合组成一个水分子。
- the splitting of the atom
柯林斯词典
- N-COUNT 原子
Anatomis the smallest amount of a substance that can take part in a chemical reaction.- A methane molecule is composed of one carbon atom attached to four hydrogens.
甲烷分子由1个碳原子与4个氢原子构成。
- A methane molecule is composed of one carbon atom attached to four hydrogens.
英英释义
noun
- (nontechnical usage) a tiny piece of anything
- (physics and chemistry) the smallest component of an element having the chemical properties of the element
双语例句
- He patented the idea that the atom could be split
他获得了“原子可以再分”这一概念的专利权。 - The anion OH having one oxygen and one hydrogen atom.
含一个氧原子和一个氢原子的OH负离子。 - This is a one electron atom.
这里有一个单电子原子。 - We will consider this Zeeman effect for the hydrogen atom.
我们将对氢原子考虑此塞曼效应。 - We utilize the atoms interact resonantly with a single-mode cavity, and introduce an auxiliary atom.
提出了一个利用单模腔场和原子的共振相互作用制备团簇态的方案，并引入了辅助原子。 - Neutrons and protons are bound together in the nucleus of an atom.
在原子核里，中子和质子是结合在一起的。 - The V2 was not an ordinary weapon: it could only be used against cities. Likewise the atom bomb.
V2火箭并非普通武器：它只能用于对付城市。原子弹也是这样。 - In this model the arrangement of bonds around the central atom is considered to depend upon how many valence-shell electron pairs.
在这个模型中，认为围绕中心原子的化学键的排列取决于价层中电子对的数量。 - So, which atom is in need of those lone pair electrons?
那么，哪个原子需要这对孤对电子呢？ - Each of the four valency electrons of the carbon atom is shared with one of a hydrogen atom.
碳原子的四个价电子都各与氢原子的一个价电子共用。