声学振动 meaning in English

acoustic vibration

Environmental tests for aircraft equipment - part 3 . 4 : acoustic vibration
飞行器设备的环境试验.第3 . 4部分:声学振动
To study the acoustic unsteady combustion of srm , built the acoustic model of chamber . deduced the little amplitude sound wave 3d equation , used the finite volume discrete method to simulate . got the vibration model of three kinds of chamber
为研究固体火箭发动机声不稳定燃烧特性,建立了燃烧室内声学特性分析的物理数学模型,推导了小振幅声波三维波动方程,采用有限体积离散方法进行仿真,得到圆柱型、四片翼柱彤和五片翼柱型药柱三种燃烧室形状声学振动基本模态