只能按空间型将声子分类。数字计算表明共价结构性质的加强可导致出现边界耦合软模。
The boundary coupling effect leads to physical pictures of phonons different from those in infinite lattice.
这就Lewis给我们的礼物，Lewis结构，你能够通过公用电子，形成共价键。
So, that's his gift to us: the Lewis structure, and the idea that you could share electrons and form a covalent bond.
锂离子的静电作用和极化作用，使锰氧之间的离子键成分减小，共价键成分增加，整个尖晶石骨架结构更加稳定。
The electrovalent bond weakens and the covalent bond strengthen between manganese and oxygen due to ion polarization effect, which makes the spinel structure more stable.
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