Imagine that the heavy positive ions of the crystal lattice are held in place by strong springs (the chemical bonds).
Imagine that the heavy positive ions of the crystal lattice are held in place by strong springs (the chemical bonds).
想像在晶格中，质量比较大的正离子被强力弹簧（代表化学键）所束缚，而热能会激发离子以某些特定的频率振动。