atom
atom
noun
noun
- the smallest particle of a chemical element that can exist
原子
■(一般作 the atom)such particles as a source of nuclear energy
原子能；核能；
the power of the atom.
原子能。
■[usu. with negative]an extremely small amount of a thing or quality
微量
I shall not have one atom of strength left.
我一定会竭尽全力。
■[usu. as modifier](Canadian)a level of amateur sport, typically involving children aged between nine and eleven
(加拿大)原级（尤指由9-11岁儿童参加的业余运动级别）
eight atom hockey teams.
八支原级曲棍球队。
- Atoms consist of a tiny, dense, positively charged nucleus made of neutrons and protons, surrounded by a cloud of negatively charged electrons, roughly 10-8cm in diameter. Each chemical element consists of atoms with a characteristic number of protons. Atoms are held together in molecules by the sharing of electrons
- late 15th cent.: from Old French atome, via Latin from Greek atomos 'indivisible', based on a- 'not' + temnein 'to cut'
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- underemployment n.不充分就业
- underestimate vt.低估,对…估计不足,看轻,把…的价值估计过低 n.低估,估计不足,过低评价，过低估价,轻视
- underestimation n.过低之估价,过低估计
- underexercise vi.训练（或锻炼、练习）太少,不适量
- underexpose vt.使（底片）曝光不足
- underexposure n.曝光不足
- underfed adj.营养不良的，吃得不饱的 v.由下部加添燃料的( underfeed的过去式和过去分词 ),未给予足量食物，添加燃料
- underfeed adj.由下部加添燃料的 n.未给予足量食物，添加燃料 vt.未喂饱,不充分供料 vi.减食,喂食太少
- underfill n.（孔型）未充满
- underfinanced adj.资金短缺的，财力不足的
- underflow n.下溢,潜流
- underfocus n.欠聚焦，弱焦点
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