This not only contributes to understanding real dynamic characteristics of PCB under drop impact and perfecting theory research, but also provides a reference for reliability design and evaluation of PCB.

• 这不仅有助于认清电路板跌落冲击作用下的真实动力学特性，完善其理论研究；还为电路板可靠性设计和可靠度评估提供理论依据。