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
- There isn't atom of sense in what you say.
你所说的话没有道理。 - Water is spoken of as containing two atoms of hydrogen and one atom of oxygen.
人们说水含有两个氢原子和一个氧原子。 - The chief differences between chlorophyll and heme are the presence of a magnesium atom in the center of the porphyrin ring.
叶绿素和血红素之间的主要的差别为在卟啉环中心存在一个镁原子。 - The compact core of the atom begins to appear.
紧凑的原子内核现身了。 - 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。 - His theory of atom was not sufficient for treatment of large atoms or molecules.
他的原子理论用于处理大的原子和分子是不能令人满意的。 - Ion: Atom or group of atoms with one or more positive or negative electric charges.
离子：带有一个或多个正电荷（阳离子）或负电荷（阴离子）的原子或原子团。 - 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。 - I started by saying, literally: This is an atom; this is a molecule.
我的第一堂课是这样开始的：这是一个原子；这是一个分子。 - 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？