atom

英 [ˈætəm]

美 [ˈætəm]

n.  原子

复数：atoms　

高考CET4CET6考研TOEFLTEM4TEM8计算机

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
  1. the splitting of the atom
     原子的分裂
  2. 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。

柯林斯词典

• N-COUNT 原子
  Anatomis the smallest amount of a substance that can take part in a chemical reaction.
  1. 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。

英英释义

noun

• (nontechnical usage) a tiny piece of anything
  Synonym:moleculeparticlecorpusclemotespeck
• (physics and chemistry) the smallest component of an element having the chemical properties of the element

双语例句

• 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。
• 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。
• 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。
• 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。
• 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。
• 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。
• The power of the atom can be used to produce electricity.
  原子能可以用来发电。
• 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。
• A molecule of ammonia is made up of one atom of nitrogen and three atoms of hydrogen.
  氨分子包含一个氮原子和三个氢原子。
• 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？