The current study is to investigate the relationship between the sound radiation and enclosure vibration by using a laser vibrometer. 利用激光测振仪，测试了箱体振动速度随频率的变化，分析了前几个振动模态的声辐射能力。
Based on the operation of a slab caster which is equipped with hydraulic oscillators, the mould friction and oscillation velocity were measccred. 基于液压振动装置的板坯连铸试验平台，对结晶器摩擦力和振动速度进行了检测实验研究。
