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
- A proton or a neutron has about the same mass as a hydrogen atom.
质子或中子的质量和氢原子的质量大致相同。 - 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。 - 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。 - An atom itself is a complete whole, with its electrons, protons and neutrons and other elements
一个原子本身就是一个完整的整体,包括电子、质子、中子及其他元素。 - 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。 - 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。 - A neutron is simply a neutral particle in the nucleus of an atom.
中子就是原子核里不带电的粒子。 - 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。 - 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 power of the atom can be used to produce electricity.
原子能可以用来发电。