中小地震震源机制
Focal Mechanism of Small and Medium Earthquakes
超微超顺磁性氧化铁
ultrasmall superparamagnetic iron
超小超顺磁性氧化铁粒子
ultrasmall superparamagnetic iron oxide
超小超顺磁氧化铁纳米粒
ultra-small superparamagnetic iron oxide nanoparticle
超小微生物
Ultra-small Microbacteria
地震超前预报
leading seismic prediction
硅微超微压传感器
silicon ultra-low-pressure sensor
矿井地震超前探测技术
mine advance seismic prediction technology