The reasons why quasi velocity spectrum is not appropriate for calculating blasting vibration are demonstrated.
并论证了爆破地震动响应计算不宜采用拟速度谱的原因。
2
Based on the strain, vibration and impact features of fiber Bragg grating (FBG) sensors, a fiber-optic intrusion alarm system using quasi-distributed FBG sensors is developed.
根据FBG传感器的应变、振动和冲击特征，报道了一种基于准分布式fbg传感器的入侵报警系统。
3
There are four methods for ultrasonic characterization of tissue elasticity: imaging inspection techniques, vibration velocity measurements, quasi-static strain measurements and parametric methods.