单词 | atom |
释义 | atom['ætəm]n. 原子, 核能, 微粒, 微量【计】 原子【化】 原子【医】 原子相关词组:to have not an atom of... atom at.om AHD: [²t“…m] D.J. [6#t*m]K.K. [6#t*m]n.(名词)1. A part or particle considered to be an irreducible constituent of a specified system.原子:某成分或元素,被视为是某一特定结构中不可分的组成部分2. The irreducible, indestructible material unit postulated by ancient atomism.原子:古代唯物论中假定的不可分的、不可破坏的物质单位3. An extremely small part, quantity, or amount.微粒,微量:极小的部分、数量或总量4. Chemistry Physics 【化学】 【物理学】 5. A unit of matter, the smallest unit of an element, having all the characteristics of that element and consisting of a dense, central, positively charged nucleus surrounded by a system of electrons. The entire structure has an approximate diameter of 10&9{-8} centimeter and characteristically remains undivided in chemical reactions except for limited removal, transfer, or exchange of certain electrons. 原子:物质的单位、元素的最小单位,有该元素的全部特征,由中部密集的、带有正电的原子核及绕原子核的一系列电子组成。全部结构的直径大约是10&9{-8}厘米,除某些电子发生有限的移动、转移或交换以外,在化学反应性能上保持一致 6. This unit regarded as a source of nuclear energy.See table at subatomic particle 原子能:认为是原子能来源的单位参见 subatomic particle语源:1. Middle English attome 中古英语 attome 2. from Latin atomus 源自 拉丁语 atomus 3. from Greek atomos [indivisible, atom] 源自 希腊语 atomos [ 不可分割的,微粒] 4. a- [not] * see a- 1a- [非,不是] *参见 a-15. tomos [cutting] from temnein [to cut] * see tem- tomos [切,割] 源自 temnein [切,割] *参见 tem- |
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