| 单词 | the atom |
| 释义 | DEFINITIVE EXAMPLES 权威例句〔MIDDLE〕At the center of the atom is the nucleus. 在原子的中心是原子核。朗文写作活用〔SEPARATE〕Rutherford first split the atom on 3rd January 1919. 1919年1月3日卢瑟福首次分裂原子。朗文写作活用〔acceptor〕The atom that contributes no electrons to a covalent bond.受体：没有给共价键提供电子的原子美国传统〔atomic theory〕The physical theory of the structure, properties, and behavior of the atom.原子论：关于原子的结构、特征及运动的物理学理论美国传统〔bond〕The atoms bond together to form a molecule.原子结合形成分子。牛津高阶〔charge〕If one or more electrons be removed, the atom is said to be positively charged.如果原子失去了一个或多个电子,我们就说原子带正电荷。英汉大词典〔conformation〕One of the spatial arrangements of atoms in a molecule that can come about through free rotation of the atoms about a single chemical bond.构象：单一化学原理中通过原子的自由旋转而形成的分子中原子的空间排列美国传统〔electrovalence〕Valence characterized by the transfer of electrons from atoms of one element to atoms of another during the formation of an ionic bond between the atoms.电价：在原子间形成离子键的过程中，由电子从一种元素的原子转移到另一种元素的原子所表示的价美国传统〔field-ion microscope〕A microscope that produces an image of the atoms on a metal surface by means of ions formed in a high-voltage electric field.场用显微镜：通过高压电场中形成的离子在金属表面展现原子图象的显微镜美国传统〔infrangible〕For centuries the atom was regarded as infrangible.有好几个世纪,原子一直被认为是不可分的。英汉大词典〔likewise〕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。柯林斯高阶〔lock〕Energy is locked up in the atom.能量被锁藏于原子内。英汉大词典〔microcosm〕The atom is a microcosm.原子即是个小宇宙。英汉大词典〔motion〕Special instruments record the speed and motion of the atoms.特殊仪器记录原子的速度和运动。麦克米伦高阶〔nucleus〕Physics The positively charged central region of an atom, composed of protons and neutrons and containing almost all of the mass of the atom.【物理学】 原子核：原子的正极中心部分，由质子和中子构成，几乎集中了原子的全部质量美国传统〔oxidation〕A reaction in which the atoms in an element lose electrons and the valence of the element is correspondingly increased.氧化：一种某个元素的原子失去电子后它的原子价相应增加的反应美国传统〔patently〕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。柯林斯高阶〔patent〕He patented the idea that the atom could be split.他的原子裂变观点获得了专利。外研社新世纪〔penetrate〕It was a long time before scientists could penetrate the mystery of the atom.很久以后科学家才洞悉原子的奥秘。英汉大词典〔power〕Scientists are working to harness the power of the atom.科学家们正在研究如何利用原子能。剑桥高阶〔radiation〕A stream of particles or electromagnetic waves emitted by the atoms and molecules of a radioactive substance as a result of nuclear decay.核衰变产生的微粒或电磁波：放射物的原子或分子由于核衰变放出的一束微粒或电磁波美国传统〔sputter〕Physics To cause the atoms of a solid to be removed from the surface by bombardment with atoms in a discharge tube.【物理学】 排射：由排射试管中原子撞击而使固体原子从表面移开美国传统〔structural formula〕A chemical formula that shows how the atoms and bonds in a molecule are arranged.结构式：表现分子中的原子的键如何排列的化学式美国传统〔subatomic〕Having dimensions or participating in reactions characteristic of the constituents of the atom.亚原子的：具有亚原子结构之尺寸的，参与亚原子结构之反应的美国传统〔subatomic〕Of or relating to the constituents of the atom.亚原子的：原子之组成成分的或与之有关的美国传统The atoms in diamonds vibrate at very high frequencies.钻石中的原子以很高的频率振动。剑桥国际Inside the atom there is a nucleus composed of neutrons and protons. The nucleus is crucial to the making of nuclear weapons. 一个原子里面有由中子和质子组成的核，对制造核武器很重要。译典通Nuclear bombs are designed to smash the atom (= divide an atom into the parts that it consists of).核弹意在使原子发生裂变。剑桥国际When the liquid cools, the atoms form themselves into a crystal structure.当液体冷却下来时，原子便自我组合，形成晶状体。剑桥国际 |
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