具有高正电荷，小离子半径的阳离子适合形成硬质玻璃，而那些低氧化态、大离子半径的阳离子则适合于形成软质玻璃。

The cations with high positive charge and small ionic radii are suitable to forming hard glasses, and those with low oxidation state and large radii are suitable to forming soft glasses.

youdao

r+ And let's say that sodium has a radius, r plus, r- and chlorine has a radius, r minus, when r is very large in comparison to the radii of the ions, I don't need to draw them this way.

让我们假设钠有半径，是，氯也有半径，是，当r比离子半径大很多的时候，我不需要这样来描述。

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