She applied a vibrating massager and a bag of frozen peas to the arm of her 7-year-old son Max, then rolled over his skin a small metal wheel used by neurologists to test sensitivity. 巴克斯特先将振动按摩器和一包冷冻青豆在她7岁儿子马克斯(Max)的手臂上进行试用,然后她将神经病学家专用的小金属轮在儿子的皮肤上滚动以检测灵敏度。
The three vibrations were discussed by comparing the vibrating velocity and frequency characters, suggesting that the touchdown vibration shared the biggest velocity and lowest frequency, resulting that keeping some certain thickness of waste residue of building and laying sand bag wall had good effect of vibration relieving. 对比分析了这三种振动的速度及频率特征,认为塌落触地振动的速度最大、频率最低,在烟囱倒塌处保留一定厚度的建筑废碴并敷设沙包墙具有良好的减振效果。