这就是晶体中的声学模。

Actually, they're the acoustic modes of the crystal.

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总结了ABO3型氧化物可能具有的各种晶体结构类型，以及由此产生的宏观电、光、声学性能。

All kinds of ABO3-type oxides are summarized, including various crystal structure and their electrical, optical, acoustics properties.

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有些极性晶体，电子与表面光学声子（SO）耦合强，与表面声学声子（SA）耦合弱。

There is weak coupling between the electron and SA phonon but strong coupling between the electron and SO phonon for many polar crystals .

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