n. 1.原子。 2.微粒；微量。 短语和例子 chemical atoms 原子。 physical atoms 分子。 have [there is] not an atom of 一点也没有。 break to atoms 粉碎 (The vase was broken to atoms. 花瓶敲得粉碎)。
(nontechnical usage) a tiny piece of anything 同义词：molecule, particle, corpuscle, mote, speck,
(physics and chemistry) the smallest component of an element having the chemical properties of the element
The atom is a basic unit of matter that consists of a dense central nucleus surrounded by a cloud of negatively charged electrons. The atomic nucleus contains a mix of positively charged protons and electrically neutral neutrons (except in the case of hydrogen-1, which is the only stable nuclide with no neutrons).
例句与用法
1.
There is a stable ground state of the atom . 原子有一个稳定的基态。
2.
An atom contains a tiny heavy nucleus . 一个原子含有一个微小而重的核。
3.
The electron is not very tied to the atom . 电子受原子的约束不那么紧。
4.
Waves emanate from the same atom source . 波是由同一原子辐射的。
5.
He didn't know that the atom bomb would work . 他不知道原子弹能解决问题。
6.
In covalent bonding, atoms share electrons . 在共价键联中，原子共有电子。
7.
Atom number eight is called oxygen . 原子序数为8的物质叫做氧。
8.
These atoms are grouped into molecules . 这些原子集合成分子。
9.
These atoms are highly reactive . 这些原子有较高的反应活性。
10.
The explosion of atom bombs gives out a good heat . 原子弹爆炸产生很大热量。
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