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
- The atom of lithium is made up of three electrons, three protons and four neutrons.
锂原子是由三个电子、三个质子和四个中子组成的。 - An atom normally contains equal numbers of electrons and protons.
原子在正常情况下含有数目相等的电子和质子。 - 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 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。 - 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。 - 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。 - 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。 - So there's one electron in each hydrogen atom.
所以每个氢原子中有两个电子。 - 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。 - 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。