Lattice systems and nonlinear wave equations are two kinds of very important infinite dimensional dynamical systems.
格点系统与非线性波动方程是两类很重要的无穷维系统。
The boundary coupling effect leads to physical pictures of phonons different from those in infinite lattice.
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。
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