To provide the soil's dynamical feature parameters for the small vibration prevention. 提供防微振动分析需要的有关土的动力特性参数。
A microvibration sensor based on the optical feedback effect in a direct frequency modulated laser diode is developed for optical detection of muscle vibration. 摘要为了实现肌肉震颤的光学探测，本文设计并研制了一套基于光反馈效应的直接频率调制激光二极管微振动传感器。
