proton
proton 英 [ˈprəʊtɒn] 美 [ˈproʊtɑn]
n. [物] 质子
名词复数:protons
- Atoms are made up of three main particles: protons, electrons, and neutrons. A proton has a positive electrical charge, while electrons are negative. The number of protons and electrons is equal in each atom.
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- n. [物] 质子
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1. So we get at the number of neutrons indirectly because we know the proton number here.
所以，我们可以间接得到中子数,因为我们知道质子数了。
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2. When a neutron inside an atom decays, it produces a proton, an electron, and a neutrino.
原子内的一个中子衰变后会产生一个质子、一个电子和一个中微子。
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3. Only then can they hope to describe conditions at the big bang, when all space and time was compressed into a volume far smaller than a proton.
只有这样他们才能指望描述一点大爆炸的那个情况，所有的空间和时间全部在那时被压缩成一个小于质子的体积。
- proton (n.) 1920 in physics, coined by English physicist Ernest Rutherford (1871-1937) from noun use of Greek proton, neuter of protos "first" (see proto-), on analogy of electron; supposedly because hydrogen was hypothesized as a constituent of all the elements. The word was used earlier in embryology (1893) as a translation of German anlage ("fundamental thing") based on Aristotle's phrase he prote ousia to proton.
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