微动

The features and applications in superprecision turnings of piezoelectric ceramic inching motion devices are introduced.

介绍了压电陶瓷微机构的性能特点及超精密车削加工的多种用途。

The Microtremor Survey Method use Microtremor observation to distill surface wave, obtain it's dispersion curve and then get inversion to the underground structure.

微勘探法是通外设置一个观测台阵记录微信,然后从观测到的微信取面波,得到面波的频散曲线,最后用频散曲线反演地质结构。