helium nucleus造句怎么写
- 造句
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Standard theory predicts that two neutrinos are produced for every fusion of four protons into a helium nucleus.
We have a helium nucleus and one electron.
So what is the charge on a helium nucleus?
So let's take two cases of shielding if we're talking about, for example, the helium, a helium nucleus or a helium atom.
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