| 单词 | atomic |
| 释义 | atomic adj. 1. concerned with or using atomic energy or atomic bombs. 2. of or relating to an atom or atoms. Phrases and idioms atomic bomb = atom bomb. atomic clock a clock in which the periodic process (time scale) is regulated by the vibrations of an atomic or molecular system, such as caesium or ammonia. atomic energy nuclear energy. atomic mass the mass of an atom measured in atomic mass units. atomic mass unit a unit of mass used to express atomic and molecular weights that is equal to one twelfth of the mass of an atom of carbon-12. Usage Abbr.: amu. atomic number the number of protons in the nucleus of an atom, which is characteristic of a chemical element and determines its place in the periodic table. Usage Symb.: Z. atomic particle any one of the particles of which an atom is constituted. atomic philosophy atomism. atomic physics the branch of physics concerned with the structure of the atom and the characteristics of the elementary particles of which it is composed. atomic pile a nuclear reactor. atomic power nuclear power. atomic spectrum the emission or absorption spectrum arising from electron transitions inside an atom and characteristic of the element. atomic structure the structure of an atom as being a central positively charged nucleus surrounded by negatively charged orbiting electrons. atomic theory 1. the concept of an atom as being composed of elementary particles. 2. the theory that all matter is made up of small indivisible particles called atoms, and that the atoms of any one element are identical in all respects but differ from those of other elements and only unite to form compounds in fixed proportions. 3. Philos. atomism. atomic warfare warfare involving the use of atom bombs. atomic weight = relative atomic mass. Derivatives atomically adv. Etymology: mod.L atomicus (as ATOM, -IC) |
| 随便看 |
英语词典包含43808条英英释义在线翻译词条，基本涵盖了全部常用单词的英英翻译及用法，是英语学习的有利工具。