震旦系浅变质岩
Sinian epimetamorphic rocks
极低级浅变质岩
low-grade epimetamorphic rock
浅变质岩
low grade metamorphic rocks
Low-grade rocks
low-grade metamorphic rock
Low-grade Metamorphic Rocks
Low grade metamorphic rock
Epimetamorphic rock
浅变质岩系
epimetamorphic rock series
泥质变质岩类
pelitic metamorphic rocks
顶盖前区前核
anterior pretectal nucleus
6-axis Acceleration Sensor
前寒武系变质岩
Precambrian metamorphic rocks
早前寒武纪变质岩系
early Precambrian metamorphic rocks
震前变化
variation before earthquakes